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Natural Opal for Sale, Certified Opals

Natural Opal for Sale - Certified Opals

Buy all types of natural Opal gemstones such as Australian Opal, White Opal, Fire Opal, Ethiopian Opal, Boulder Opal and more online. Our inventory of opal for sale comes in the whole rainbow of colors which include black, white, red, orange, multicolor and much more. Select unique single Opals, matched pairs or lots which are perfect for any type of jewelry such as rings, earrings, wedding bands, pendants and more. The large variety of colors, shapes and sizes makes it easy for every jeweler, designer and collector to find something suitable. All our Opals for Sale are natural which can be certified by well known gemstone labs like ICA Gemlab.
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Photos are of Actual Products for Sale
19.33ct Loose Boulder Opal | 19.33 ct Fancy Boulder Opal, 26 x 15.9 mm From Australia, Photo A

19.33 ct Fancy Boulder Opal, 26 x 15.9 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 19.33 carat weight Boulder Opal

19.33ct1 Piece
$ 96.65
26 x 15.9 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 19.33 ct Boulder Opal
Boulder Opal Shape: Fancy Cabochon Boulder Opal
Boulder Opal Size: 26 x 15.9 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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16.81ct Loose Boulder Opal | 16.81 ct Fancy Boulder Opal, 28.8 x 13.1 mm From Australia, Photo A
Click for Product Video (628411)

16.81 ct Fancy Boulder Opal, 28.8 x 13.1 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 16.81 carat weight Boulder Opal

16.81ct1 Piece
$ 84.05
28.8 x 13.1 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 16.81 ct Boulder Opal
Boulder Opal Shape: Fancy Cabochon Boulder Opal
Boulder Opal Size: 28.8 x 13.1 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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35.80ct Loose Boulder Opal | 35.8 ct Fancy Boulder Opal, 36.6 x 19.7 mm From Australia, Photo A
Click for Product Video (575232)

35.8 ct Fancy Boulder Opal, 36.6 x 19.7 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 35.80 carat weight Boulder Opal

35.80ct1 Piece
$ 118.14
36.6 x 19.7 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 35.80 ct Boulder Opal
Boulder Opal Shape: Fancy Cabochon Boulder Opal
Boulder Opal Size: 36.6 x 19.7 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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34.16ct Loose Boulder Opal | 34.16 ct Oval Boulder Opal, 23.4 x 19.6 mm From Australia, Photo A
Click for Product Video (410119)

34.16 ct Oval Boulder Opal, 23.4 x 19.6 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 34.16 carat weight Boulder Opal

34.16ct1 Piece
$ 263.42
23.4 x 19.6 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 34.16 ct Boulder Opal
Boulder Opal Shape: Oval Cabochon Boulder Opal
Boulder Opal Size: 23.4 x 19.6 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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23.40ct Loose Boulder Opal | 23.4 ct Oval Boulder Opal, 24.1 x 16.7 mm From Australia, Photo A
Click for Product Video (628053)

23.4 ct Oval Boulder Opal, 24.1 x 16.7 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 23.40 carat weight Boulder Opal

23.40ct1 Piece
$ 117.00
24.1 x 16.7 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 23.40 ct Boulder Opal
Boulder Opal Shape: Oval Cabochon Boulder Opal
Boulder Opal Size: 24.1 x 16.7 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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25.75ct Loose Boulder Opal | 25.75 ct Fancy Boulder Opal, 21 x 18.4 mm From Australia, Photo A
Click for Product Video (521765)

25.75 ct Fancy Boulder Opal, 21 x 18.4 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 25.75 carat weight Boulder Opal

25.75ct1 Piece
$ 141.63
21 x 18.4 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 25.75 ct Boulder Opal
Boulder Opal Shape: Fancy Cabochon Boulder Opal
Boulder Opal Size: 21 x 18.4 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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33.73ct Loose Boulder Opal | 33.73 ct Fancy Boulder Opal, 35.2 x 23.5 mm From Australia, Photo A
Click for Product Video (524127)

33.73 ct Fancy Boulder Opal, 35.2 x 23.5 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 33.73 carat weight Boulder Opal

33.73ct1 Piece
$ 185.52
35.2 x 23.5 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 33.73 ct Boulder Opal
Boulder Opal Shape: Fancy Cabochon Boulder Opal
Boulder Opal Size: 35.2 x 23.5 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Translucent Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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28.09ct Loose Boulder Opal | 28.09 ct Oval Boulder Opal, 26.6 x 19.4 mm From Australia, Photo A

28.09 ct Oval Boulder Opal, 26.6 x 19.4 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 28.09 carat weight Boulder Opal

28.09ct1 Piece
$ 216.29
26.6 x 19.4 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 28.09 ct Boulder Opal
Boulder Opal Shape: Oval Cabochon Boulder Opal
Boulder Opal Size: 26.6 x 19.4 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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17.29ct Loose Boulder Opal | 17.29 ct Fancy Boulder Opal, 27 x 17.2 mm From Australia, Photo A

17.29 ct Fancy Boulder Opal, 27 x 17.2 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 17.29 carat weight Boulder Opal

17.29ct1 Piece
$ 95.10
27 x 17.2 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 17.29 ct Boulder Opal
Boulder Opal Shape: Fancy Cabochon Boulder Opal
Boulder Opal Size: 27 x 17.2 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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24.07ct Loose Boulder Opal | 24.07 ct Fancy Boulder Opal, 22.2 x 18.7 mm From Australia, Photo A
Click for Product Video (628406)

24.07 ct Fancy Boulder Opal, 22.2 x 18.7 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 24.07 carat weight Boulder Opal

24.07ct1 Piece
$ 120.35
22.2 x 18.7 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 24.07 ct Boulder Opal
Boulder Opal Shape: Fancy Cabochon Boulder Opal
Boulder Opal Size: 22.2 x 18.7 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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20.80ct Loose Boulder Opal | 20.8 ct Fancy Boulder Opal, 32.3 x 16.8 mm From Australia, Photo A

20.8 ct Fancy Boulder Opal, 32.3 x 16.8 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 20.80 carat weight Boulder Opal

20.80ct1 Piece
$ 114.40
32.3 x 16.8 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 20.80 ct Boulder Opal
Boulder Opal Shape: Fancy Cabochon Boulder Opal
Boulder Opal Size: 32.3 x 16.8 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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26.43ct Loose Boulder Opal | 26.43 ct Oval Boulder Opal, 28.5 x 17.9 mm From Australia, Photo A
Click for Product Video (521759)

26.43 ct Oval Boulder Opal, 28.5 x 17.9 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 26.43 carat weight Boulder Opal

26.43ct1 Piece
$ 145.37
28.5 x 17.9 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 26.43 ct Boulder Opal
Boulder Opal Shape: Oval Cabochon Boulder Opal
Boulder Opal Size: 28.5 x 17.9 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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30.50ct Loose Boulder Opal | 30.5 carat Pear Boulder Opal, loose Certified Boulder Opal from Australia, Natural Untreated Gem, 29.4 x 21.8 mm, Photo A
Click for Product Video (523672)

30.5 carat Pear Boulder Opal, loose Certified Boulder Opal from Australia, Natural Untreated Gem, 29.4 x 21.8 mm

Natural Boulder Opal, Qty: 1 pc | 30.50 carat weight Boulder Opal

30.50ct1 Piece
$ 167.75
29.4 x 21.8 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 30.50 ct Boulder Opal
Boulder Opal Shape: Pear Cabochon Boulder Opal
Boulder Opal Size: 29.4 x 21.8 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Translucent Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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20.55ct Loose Boulder Opal | 20.55 carat Pear Boulder Opal, loose Certified Boulder Opal from Australia, Natural Untreated Gem, 31.9 x 16.1 mm, Photo A

20.55 carat Pear Boulder Opal, loose Certified Boulder Opal from Australia, Natural Untreated Gem, 31.9 x 16.1 mm

Natural Boulder Opal, Qty: 1 pc | 20.55 carat weight Boulder Opal

20.55ct1 Piece
$ 113.03
31.9 x 16.1 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 20.55 ct Boulder Opal
Boulder Opal Shape: Pear Cabochon Boulder Opal
Boulder Opal Size: 31.9 x 16.1 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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21.82ct Loose Boulder Opal | 21.82 ct Cushion Boulder Opal, 20.7 x 16.1 mm From Australia, Photo A
Click for Product Video (627639)

21.82 ct Cushion Boulder Opal, 20.7 x 16.1 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 21.82 carat weight Boulder Opal

21.82ct1 Piece
$ 168.01
20.7 x 16.1 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 21.82 ct Boulder Opal
Boulder Opal Shape: Cushion Cabochon Boulder Opal
Boulder Opal Size: 20.7 x 16.1 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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15.88ct Loose Boulder Opal | 15.88 ct Cushion Boulder Opal, 23.1 x 12.2 mm From Australia, Photo A

15.88 ct Cushion Boulder Opal, 23.1 x 12.2 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 15.88 carat weight Boulder Opal

15.88ct1 Piece
$ 111.16
23.1 x 12.2 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 15.88 ct Boulder Opal
Boulder Opal Shape: Cushion Cabochon Boulder Opal
Boulder Opal Size: 23.1 x 12.2 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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42.73ct Loose Boulder Opal | 42.73 ct Oval Boulder Opal, 27.5 x 20.8 mm From Australia, Photo A
Click for Product Video (322037)

42.73 ct Oval Boulder Opal, 27.5 x 20.8 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 42.73 carat weight Boulder Opal

42.73ct1 Piece
$ 329.02
27.5 x 20.8 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 42.73 ct Boulder Opal
Boulder Opal Shape: Oval Cabochon Boulder Opal
Boulder Opal Size: 27.5 x 20.8 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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20.97ct Loose Boulder Opal | 20.97 ct Oval Boulder Opal, 21.5 x 15.7 mm From Australia, Photo A

20.97 ct Oval Boulder Opal, 21.5 x 15.7 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 20.97 carat weight Boulder Opal

20.97ct1 Piece
$ 104.85
21.5 x 15.7 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 20.97 ct Boulder Opal
Boulder Opal Shape: Oval Cabochon Boulder Opal
Boulder Opal Size: 21.5 x 15.7 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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19.94ct Loose Boulder Opal | 19.94 ct Marquise Boulder Opal, 36.4 x 16.3 mm From Australia, Photo A

19.94 ct Marquise Boulder Opal, 36.4 x 16.3 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 19.94 carat weight Boulder Opal

19.94ct1 Piece
$ 109.67
36.4 x 16.3 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 19.94 ct Boulder Opal
Boulder Opal Shape: Marquise Cabochon Boulder Opal
Boulder Opal Size: 36.4 x 16.3 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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20.30ct Loose Boulder Opal | 20.3 ct Fancy Boulder Opal, 25.5 x 16 mm From Australia, Photo A

20.3 ct Fancy Boulder Opal, 25.5 x 16 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 20.30 carat weight Boulder Opal

20.30ct1 Piece
$ 101.50
25.5 x 16 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 20.30 ct Boulder Opal
Boulder Opal Shape: Fancy Cabochon Boulder Opal
Boulder Opal Size: 25.5 x 16 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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21.59ct Loose Boulder Opal | 21.59 ct Fancy Boulder Opal, 24.1 x 18.3 mm From Australia, Photo A

21.59 ct Fancy Boulder Opal, 24.1 x 18.3 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 21.59 carat weight Boulder Opal

21.59ct1 Piece
$ 107.95
24.1 x 18.3 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 21.59 ct Boulder Opal
Boulder Opal Shape: Fancy Cabochon Boulder Opal
Boulder Opal Size: 24.1 x 18.3 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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17.73ct Loose Boulder Opal | 17.73 ct Fancy Boulder Opal, 23.7 x 15.3 mm From Australia, Photo A

17.73 ct Fancy Boulder Opal, 23.7 x 15.3 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 17.73 carat weight Boulder Opal

17.73ct1 Piece
$ 88.65
23.7 x 15.3 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 17.73 ct Boulder Opal
Boulder Opal Shape: Fancy Cabochon Boulder Opal
Boulder Opal Size: 23.7 x 15.3 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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30.94ct Loose Boulder Opal | 30.94 ct Fancy Boulder Opal, 25.4 x 20.1 mm From Australia, Photo A
Click for Product Video (521754)

30.94 ct Fancy Boulder Opal, 25.4 x 20.1 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 30.94 carat weight Boulder Opal

30.94ct1 Piece
$ 170.17
25.4 x 20.1 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 30.94 ct Boulder Opal
Boulder Opal Shape: Fancy Cabochon Boulder Opal
Boulder Opal Size: 25.4 x 20.1 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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21.39ct Loose Boulder Opal | 21.39 ct Cushion Boulder Opal, 16.4 x 16.4 mm From Australia, Photo A

21.39 ct Cushion Boulder Opal, 16.4 x 16.4 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 21.39 carat weight Boulder Opal

21.39ct1 Piece
$ 164.70
16.4 x 16.4 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 21.39 ct Boulder Opal
Boulder Opal Shape: Cushion Cabochon Boulder Opal
Boulder Opal Size: 16.4 x 16.4 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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25.30ct Loose Boulder Opal | 25.3 ct Oval Boulder Opal, 29.7 x 13.5 mm From Australia, Photo A

25.3 ct Oval Boulder Opal, 29.7 x 13.5 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 25.30 carat weight Boulder Opal

25.30ct1 Piece
$ 177.10
29.7 x 13.5 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 25.30 ct Boulder Opal
Boulder Opal Shape: Oval Cabochon Boulder Opal
Boulder Opal Size: 29.7 x 13.5 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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35.99ct Loose Boulder Opal | 35.99 ct Fancy Boulder Opal, 45 x 23.8 mm From Australia, Photo A
Click for Product Video (575226)

35.99 ct Fancy Boulder Opal, 45 x 23.8 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 35.99 carat weight Boulder Opal

35.99ct1 Piece
$ 107.97
45 x 23.8 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 35.99 ct Boulder Opal
Boulder Opal Shape: Fancy Cabochon Boulder Opal
Boulder Opal Size: 45 x 23.8 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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12.07ct Loose Boulder Opal | 12.07 ct Oval Boulder Opal, 27.4 x 9.9 mm From Australia, Photo A

12.07 ct Oval Boulder Opal, 27.4 x 9.9 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 12.07 carat weight Boulder Opal

12.07ct1 Piece
$ 84.49
27.4 x 9.9 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 12.07 ct Boulder Opal
Boulder Opal Shape: Oval Cabochon Boulder Opal
Boulder Opal Size: 27.4 x 9.9 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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17.03ct Loose Boulder Opal | 17.03 ct Fancy Boulder Opal, 26.9 x 13.5 mm From Australia, Photo A

17.03 ct Fancy Boulder Opal, 26.9 x 13.5 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 17.03 carat weight Boulder Opal

17.03ct1 Piece
$ 93.67
26.9 x 13.5 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 17.03 ct Boulder Opal
Boulder Opal Shape: Fancy Cabochon Boulder Opal
Boulder Opal Size: 26.9 x 13.5 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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25.50ct Loose Boulder Opal | 25.5 ct Trillion Boulder Opal, 22.1 x 21.4 mm From Australia, Photo A

25.5 ct Trillion Boulder Opal, 22.1 x 21.4 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 25.50 carat weight Boulder Opal

25.50ct1 Piece
$ 127.50
22.1 x 21.4 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 25.50 ct Boulder Opal
Boulder Opal Shape: Trillion Cabochon Boulder Opal
Boulder Opal Size: 22.1 x 21.4 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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17.24ct Loose Boulder Opal | 17.24 ct Trillion Boulder Opal, 21.2 x 17.4 mm From Australia, Photo A

17.24 ct Trillion Boulder Opal, 21.2 x 17.4 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 17.24 carat weight Boulder Opal

17.24ct1 Piece
$ 86.20
21.2 x 17.4 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 17.24 ct Boulder Opal
Boulder Opal Shape: Trillion Cabochon Boulder Opal
Boulder Opal Size: 21.2 x 17.4 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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33.71ct Loose Boulder Opal | 33.71 ct Fancy Boulder Opal, 32.6 x 22.1 mm From Australia, Photo A
Click for Product Video (523722)

33.71 ct Fancy Boulder Opal, 32.6 x 22.1 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 33.71 carat weight Boulder Opal

33.71ct1 Piece
$ 185.41
32.6 x 22.1 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 33.71 ct Boulder Opal
Boulder Opal Shape: Fancy Cabochon Boulder Opal
Boulder Opal Size: 32.6 x 22.1 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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23.38ct Loose Boulder Opal | 23.38 ct Fancy Boulder Opal, 25.3 x 16.7 mm From Australia, Photo A

23.38 ct Fancy Boulder Opal, 25.3 x 16.7 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 23.38 carat weight Boulder Opal

23.38ct1 Piece
$ 116.90
25.3 x 16.7 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 23.38 ct Boulder Opal
Boulder Opal Shape: Fancy Cabochon Boulder Opal
Boulder Opal Size: 25.3 x 16.7 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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41.37ct Loose Boulder Opal | 41.37 ct Oval Boulder Opal, 29.7 x 21.2 mm From Australia, Photo A
Click for Product Video (522985)

41.37 ct Oval Boulder Opal, 29.7 x 21.2 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 41.37 carat weight Boulder Opal

41.37ct1 Piece
$ 227.54
29.7 x 21.2 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 41.37 ct Boulder Opal
Boulder Opal Shape: Oval Cabochon Boulder Opal
Boulder Opal Size: 29.7 x 21.2 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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14.98ct Loose Boulder Opal | 14.98 ct Cushion Boulder Opal, 20.2 x 13.9 mm From Australia, Photo A

14.98 ct Cushion Boulder Opal, 20.2 x 13.9 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 14.98 carat weight Boulder Opal

14.98ct1 Piece
$ 104.86
20.2 x 13.9 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 14.98 ct Boulder Opal
Boulder Opal Shape: Cushion Cabochon Boulder Opal
Boulder Opal Size: 20.2 x 13.9 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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28.58ct Loose Boulder Opal | 28.58 ct Oval Boulder Opal, 23.1 x 18.5 mm From Australia, Photo A
Click for Product Video (300453)

28.58 ct Oval Boulder Opal, 23.1 x 18.5 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 28.58 carat weight Boulder Opal

28.58ct1 Piece
$ 200.06
23.1 x 18.5 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 28.58 ct Boulder Opal
Boulder Opal Shape: Oval Cabochon Boulder Opal
Boulder Opal Size: 23.1 x 18.5 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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22.12ct Loose Boulder Opal | 22.12 ct Oval Boulder Opal, 27.5 x 12.8 mm From Australia, Photo A

22.12 ct Oval Boulder Opal, 27.5 x 12.8 mm From Australia

Natural Boulder Opal, Qty: 1 pc | 22.12 carat weight Boulder Opal

22.12ct1 Piece
$ 154.84
27.5 x 12.8 mm
Item Description
Stone Type: Loose Boulder Opal
Boulder Opal Weight: 22.12 ct Boulder Opal
Boulder Opal Shape: Oval Cabochon Boulder Opal
Boulder Opal Size: 27.5 x 12.8 mm Boulder Opal
Boulder Opal Color: Multicolor Boulder Opal
Boulder Opal Clarity: Opaque Boulder Opal
Boulder Opal Origin: Australia Boulder Opal
Boulder Opal Treatment: Untreated
Boulder Opal Quantity: 1
Boulder Opal Certificate: GemSelect
Product Description:
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Opals are thought of by many as the most beautiful and exciting of all gemstones. The fascinating play-of-color in which a rainbow of hues dances before your eyes is one of the true wonders of nature.

Opals are a unique gemstone in every sense of the word, from their crystal structure made up of millions of tiny spheres to their transparent, translucent or opaque bodies. They can be a single vivid color or a mix of all imaginable colors, have a light white background or a deep dark backing - the variety is endless.

Opal Colors

Describing the color of an opal is not simple. Some opals possess all the colors of the rainbow but never in regular lines or bands - more like an abstract painting or a random composition.

I will attempt to categorize opal colors as best I can.

We have the most common. White opals with a pale or light body tone upon which the kaleidoscopic colors will be displayed.

Then we have Black opals which have a dark body or background for the colors to contrast against in a dramatic manner.

There are also Fire opals which are generally all one color but the color is a vivid and intense hue often red, yellow or orange as the name may suggest.

The variety of opal colors is too vast to go into much detail but please read our article on Opals for more information.

Opal Species

The types of gemstones that fall under the name of opal are almost as endless as the colors they come in.

Just some of the more well-known ones are:

And we could go on and on!

Opal Price

As with most gemstones, it is the color of the opal that is the number one consideration when appraising its price.

Opals are such an irregular gemstone so there will always be different opinions about which is the most beautiful and we all have our own preferences but over the years certain trends have proved more valuable than others.

For example, an opal that has a dominant red color covering much of the gemstone surface will be very highly valued.

As a very general rule, as you move down the color spectrum from red and orange through green to blue the price lessens more and more.

The direction of the color is an aspect not found in many other stones. Because of the crystal structure of opals, some colors will appear clearer and brighter from one angle more than another.

Other factors have to be taken into account of course with color coverage, contrasts between the color and the background, color intensity and so on.

Carat Weight

Once an opal has been evaluated according to its color, intensity, play-of-color, coverage and so on it is given a price per carat to calculate the gemstone's total value.

Australian opals can be priced as low as $20 per carat all the way up to as much as $1000 per carat for the finest examples.

Fire Opals reach $15 - $100 per carat and Boulder Opals can be found at prices of $5 - $300 per carat depending on quality.

Treatments

Usually Opals are not treated other than by cutting and shaping the stone to capture the best color and pattern and then polishing it.

Some opals look better with a stark contrast between a dark background and a bright color up front. To his end smoke can be introduced into the gemstone's pores to darken the stone. For the same reasons, black opals can be treated with a sugar-acid solution.

A totally accepted form of treatment for opals is the doublet or triplet where a thin layer of opal is mounted onto a durable backing and sometimes given a clear top. This protects the very thin and fragile opal material.

All treatments received by any of our gemstones are clearly disclosed.

Where are Opals found?

Australia is the most famous source of opals with around 90% of the world's supplies originating there. Ethiopia has become a significant player in the Black Opal trade while Fire Opals are most often found in Mexico.

What jewelry is Opal suitable for?

Opals have a rating of 5.5 to 6.5 on Mohs hardness scale. This would normally make them a little bit fragile for many types of jewelry items and not suitable for daily wear.

However gemstones such as Boulder Opals and Matrix Opals are still attached to the durable rocks they formed in so are much tougher than the rating would suggest.

Opal couplets and triplets are also designed to be worn on a regular basis.

Large and striking opals cut into interesting odd shapes can help create wonderful and unique jewelry items, especially pendants, brooches and earrings where durability is not such an issue.

Birthstones and Anniversaries

Opals are the birthstone of October and would make an ideal gift for anyone who has a birthday in that month.

An opal is the traditional gemstone gift for the 14th wedding anniversary.

Read All

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