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Buy Untreated Gemstones

(938)
Untreated Gemstones Weight Untreated Gemstones Size Untreated Gemstones Clarity Untreated Gemstones Price Untreated Gemstones Origin
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Photos are of Actual Products for Sale
1.44ct1 Piece
$ 40.12
10.1 x 6.9 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 1.44 ct Opal
Opal Shape: Pear Cabochon Opal
Opal Size: 10.1 x 6.9 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Ethiopia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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1.84ct1 Piece
$ 64.40
13.8 x 6.7 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 1.84 ct Opal
Opal Shape: Marquise Cabochon Opal
Opal Size: 13.8 x 6.7 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Ethiopia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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9.49ct1 Piece
$ 237.25
17.5 x 11.8 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 9.49 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 17.5 x 11.8 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Translucent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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1.25ct1 Piece
$ 343.75
9.1 x 7.1 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 1.25 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 9.1 x 7.1 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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50.36ct1 Piece
$ 151.08
36.9 x 27 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 50.36 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 36.9 x 27 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Opaque Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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4.44ct1 Piece
$ 111.00
12.7 x 12.7 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 4.44 ct Opal
Opal Shape: Pear Cabochon Opal
Opal Size: 12.7 x 12.7 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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37.98ct1 Piece
$ 113.94
30.4 x 22.1 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 37.98 ct Opal
Opal Shape: Pear Cabochon Opal
Opal Size: 30.4 x 22.1 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Opaque Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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0.89ct (total)2 Pieces
$ 244.75
6.8 x 5 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 0.45 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 6.8 x 5 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 2
Opal Certificate: GemSelect
Product Description:
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13.80ct1 Piece
$ 690.00
23.3 x 11.2 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 13.80 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 23.3 x 11.2 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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1.79ct (total)2 Pieces
$ 447.50
8 x 6.1 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 0.90 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 8 x 6.1 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 2
Opal Certificate: GemSelect
Product Description:
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Select pcs
$ 19.73
6.9 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 0.81 ct Opal
Opal Shape: Round Cabochon Opal
Opal Size: 6.9 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Ethiopia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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3.78ct1 Piece
$ 83.16
13.6 x 10 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 3.78 ct Opal
Opal Shape: Pear Cabochon Opal
Opal Size: 13.6 x 10 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Translucent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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3.13ct1 Piece
$ 93.90
11.1 x 10.8 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 3.13 ct Opal
Opal Shape: Trillion Cabochon Opal
Opal Size: 11.1 x 10.8 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Translucent Opal
Opal Origin: Ethiopia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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1.37ct (total)2 Pieces
$ 342.50
7.7 x 6.1 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 0.69 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 7.7 x 6.1 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 2
Opal Certificate: GemSelect
Product Description:
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5.37ct1 Piece
$ 241.65
16.5 x 11.1 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 5.37 ct Opal
Opal Shape: Pear Facet Opal
Opal Size: 16.5 x 11.1 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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14.32ct1 Piece
$ 716.00
21.7 x 16.7 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 14.32 ct Opal
Opal Shape: Pear Cabochon Opal
Opal Size: 21.7 x 16.7 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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18.73ct1 Piece
$ 40.27
23.3 x 12.9 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 18.73 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 23.3 x 12.9 mm Opal
Opal Color: Yellowish Green Opal
Opal Clarity: Opaque Opal
Opal Origin: Brazil Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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1.72ct (total)2 Pieces
$ 430.00
8 x 6 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 0.86 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 8 x 6 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Translucent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 2
Opal Certificate: GemSelect
Product Description:
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Select pcs
$ 21.71
6.8 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 0.87 ct Opal
Opal Shape: Round Cabochon Opal
Opal Size: 6.8 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Ethiopia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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33.02ct1 Piece
$ 1,651.50
30 x 21.2 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 33.02 ct Opal
Opal Shape: Pear Cabochon Opal
Opal Size: 30 x 21.2 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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13.00ct1 Piece
$ 27.95
19.4 x 13.6 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 13.00 ct Opal
Opal Shape: Pear Cabochon Opal
Opal Size: 19.4 x 13.6 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Opaque Opal
Opal Origin: Brazil Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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1.50ct1 Piece
$ 31.50
11.8 x 7.9 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 1.50 ct Opal
Opal Shape: Pear Cabochon Opal
Opal Size: 11.8 x 7.9 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Translucent Opal
Opal Origin: Ethiopia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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48.08ct1 Piece
$ 144.24
40.1 x 27.1 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 48.08 ct Opal
Opal Shape: Pear Cabochon Opal
Opal Size: 40.1 x 27.1 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Opaque Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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36.33ct1 Piece
$ 108.99
32.2 x 22.5 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 36.33 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 32.2 x 22.5 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Opaque Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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46.76ct1 Piece
$ 140.28
37 x 23.5 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 46.76 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 37 x 23.5 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Opaque Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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1.09ct1 Piece
$ 35.97
11.1 x 6 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 1.09 ct Opal
Opal Shape: Pear Facet Opal
Opal Size: 11.1 x 6 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Translucent Opal
Opal Origin: Ethiopia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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24.54ct1 Piece
$ 73.62
28 x 21 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 24.54 ct Opal
Opal Shape: Pear Cabochon Opal
Opal Size: 28 x 21 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Opaque Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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1.25ct1 Piece
$ 30.25
10.2 x 7.9 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 1.25 ct Opal
Opal Shape: Pear Cabochon Opal
Opal Size: 10.2 x 7.9 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Translucent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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4.38ct1 Piece
$ 131.40
12.5 x 12.3 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 4.38 ct Opal
Opal Shape: Trillion Cabochon Opal
Opal Size: 12.5 x 12.3 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Translucent Opal
Opal Origin: Ethiopia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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1.89ct1 Piece
$ 56.70
11.7 x 7.9 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 1.89 ct Opal
Opal Shape: Oval Facet Opal
Opal Size: 11.7 x 7.9 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Translucent Opal
Opal Origin: Ethiopia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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1.31ct1 Piece
$ 32.88
8.9 x 6.8 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 1.31 ct Opal
Opal Shape: Oval Cabochon Opal
Opal Size: 8.9 x 6.8 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Translucent Opal
Opal Origin: Ethiopia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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25.72ct1 Piece
$ 77.16
27.3 x 25.1 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 25.72 ct Opal
Opal Shape: Pear Cabochon Opal
Opal Size: 27.3 x 25.1 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Opaque Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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1.46ct1 Piece
$ 65.70
11.9 x 6.3 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 1.46 ct Opal
Opal Shape: Octagon Step Cut Opal
Opal Size: 11.9 x 6.3 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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3.04ct (total)4 Pieces
$ 71.26
6.6 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 0.76 ct Opal
Opal Shape: Round Cabochon Opal
Opal Size: 6.6 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Ethiopia Opal
Opal Treatment: Untreated
Opal Quantity: 4
Opal Certificate: GemSelect
Product Description:
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1.54ct1 Piece
$ 38.50
10.2 x 7.4 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 1.54 ct Opal
Opal Shape: Oval Facet Opal
Opal Size: 10.2 x 7.4 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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1.87ct1 Piece
$ 47.22
12.8 x 9.1 mm
Item Description
Stone Type: Loose Opal
Opal Weight: 1.87 ct Opal
Opal Shape: Oval Facet Opal
Opal Size: 12.8 x 9.1 mm Opal
Opal Color: Multicolor Opal
Opal Clarity: Transparent Opal
Opal Origin: Australia Opal
Opal Treatment: Untreated
Opal Quantity: 1
Opal Certificate: GemSelect
Product Description:
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1 2 3
1 - 27
The idea of treating gemstones is nothing new. Nowadays, gem treatments are a way to supply the global demand for colored gemstones with a very limited 'natural' supply. Many gem types are always, or almost always, treated. The most common gem treatment is heat treatment, which is routinely applied to ruby and sapphire. Other gems such as emerald, tanzanite, blue zircon and blue topaz, are generally treated to produce their distinctive color; in fact it's virtually impossible to buy blue topaz that has not been irradiated. Even for the most expert gem buyers, determining whether a gemstone has been treated or enhanced is not always easy, and usually requires much more than just a jeweler's loupe.

Even with advanced gemological equipment, many treatments are still almost impossible to detect. So for many gem and jewelry buyers, one of the best ways to ensure the gem they're acquiring is completely natural and untreated, is through the selective buying of gemstone varieties that for the most part are never enhanced in any way. If you're searching for untreated gemstones, you may be surprised to discover we carry over 100 different untreated gem types.

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