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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (114): Australian Opal Gems - Opal, Opal Doublet, Boulder Opal, Black Opal Clear All
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1 pc
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thumb image of 17.2ct Carved Turtle Multicolor Opal (ID: 403276)
17.20 ct Opal
25.9 x 20.2 mm
$ 78.95
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4 pcs
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thumb image of 0.6ct Oval Cabochon Multicolor Opal Doublet (ID: 294054)
0.59 ct (total 2.36ctw) Opal Doublet
7.1 x 4.9 mm
$ 70.80
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4 pcs
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thumb image of 0.6ct Oval Cabochon Multicolor Opal Doublet (ID: 294050)
0.59 ct (total 2.37ctw) Opal Doublet
7.1 x 5.1 mm
$ 71.10
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8 pcs
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thumb image of 0.6ct Pear Cabochon Multicolor Opal Doublet (ID: 446823)
0.60 ct (total 4.77ctw) Opal Doublet
8.2 x 5.2 mm
$ 71.55
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6 pcs
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thumb image of 0.8ct Marquise Cabochon Multicolor Opal Doublet (ID: 446813)
0.77 ct (total 4.59ctw) Opal Doublet
10.2 x 5.1 mm
$ 68.85
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1 pc
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thumb image of 21ct Oval Cabochon Multicolor Boulder Opal (ID: 321920)
21.04 ct Boulder Opal
27.9 x 12.8 mm
$ 147.28
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8 pcs
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thumb image of 0.6ct Pear Cabochon Multicolor Opal Doublet (ID: 446926)
0.63 ct (total 5.00ctw) Opal Doublet
8 x 5.1 mm
$ 75.00
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1 pc
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thumb image of 22.7ct Fancy Cabochon Multicolor Boulder Opal (ID: 420682)
22.65 ct Boulder Opal
29.3 x 12.9 mm
$ 135.90
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thumb image of 21.2ct Pear Cabochon Multicolor Boulder Opal (ID: 449597)
21.20 ct Boulder Opal
25 x 18.5 mm
$ 148.40
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4 pcs
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thumb image of 0.8ct Oval Cabochon Multicolor Opal Doublet (ID: 315604)
0.77 ct (total 3.09ctw) Opal Doublet
8 x 6 mm
$ 77.25
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1 pc
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thumb image of 4.6ct Fancy Cabochon Multicolor Opal Doublet (ID: 420784)
4.59 ct Opal Doublet
16.9 x 10.9 mm
$ 73.44
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1 pc
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thumb image of 5.9ct Fancy Cabochon Multicolor Opal Doublet (ID: 420615)
5.90 ct Opal Doublet
21.8 x 14 mm
$ 94.40
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20 pcs
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thumb image of 0.4ct Oval Cabochon Multicolor Opal Doublet (ID: 449352)
0.35 ct (total 6.90ctw) Opal Doublet
6.1 x 4.2 mm
$ 100.67
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1 pc
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thumb image of 17.3ct Pear Cabochon Multicolor Boulder Opal (ID: 302899)
17.27 ct Boulder Opal
23.5 x 13.5 mm
$ 120.89
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1 pc
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Click for Product Video (321846)
thumb image of 21.6ct Trillion Cabochon Multicolor Boulder Opal (ID: 321846)
21.64 ct Boulder Opal
21.2 x 20.6 mm
$ 151.48
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16 pcs
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thumb image of 0.8ct Oval Cabochon Blue Opal Doublet (ID: 201319)
0.79 ct (total 12.71ctw) Opal Doublet
8 x 6 mm
$ 57.20
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1 pc
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Click for Product Video (321921)
thumb image of 21.3ct Oval Cabochon Multicolor Boulder Opal (ID: 321921)
21.32 ct Boulder Opal
27.3 x 13.1 mm
$ 149.24
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20 pcs
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thumb image of 0.4ct Oval Cabochon Multicolor Opal Doublet (ID: 446909)
0.35 ct (total 7.03ctw) Opal Doublet
6.1 x 4 mm
$ 105.45
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1 pc
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Click for Product Video (336576)
thumb image of 15.8ct Round Cabochon Multicolor Boulder Opal (ID: 336576)
15.80 ct Boulder Opal
18.6 mm
$ 110.60
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1 pc
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thumb image of 22.2ct Oval Cabochon Multicolor Boulder Opal (ID: 302926)
22.16 ct Boulder Opal
22.7 x 18.1 mm
$ 155.12
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1 pc
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thumb image of 16.6ct Fancy Cabochon Blue Opal Doublet (ID: 357911)
16.57 ct Opal Doublet
27.4 x 20.5 mm
$ 107.70
Item in Stock
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Australian Opal Gems
Australia is the most important source for fine opal gemstones. Australian opals include black opal, boulder opal, crystal opal, fire opal and white opal. Famous opal deposits in New South Wales are at Lightning Ridge and White Cliffs, in South Australia, and also at Coober Pedy and Andamooka. Other opal deposits are also found in Queensland. Australia is the main source of the world's finest and largest supply of precious opal, including the rarest and most valuable Australian black opal. The best black opal is thought to come from Lightning Ridge in New South Wales. Australian opal is known for its incredible play of color and excellent stability. Opal gemstones make wonderfully unique and interesting jewelry. In 1993, Australia declared opal its national gemstone. Some of the finest and largest Australian opals ever seen include the multicolored precious opal gem called the Virgin Rainbow, from Coober Pedy, Big Ben, which was found in Lightning Ridge, the Light of the World and the Andamooka Desert Flame.
Certified Customer Reviews
Overall Rating -> 10 star ratings
Huge variety including unusual cuts and colors
Posted By Steffie in August, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
I have bought several stones and am very happy with the price points, selection and speed of delivery. Sometimes the quality is not quite what I expected but given the prices, I am overall satisfied.
Posted By in August, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
offer military prices
Posted By Frobb1968 in August, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
Trustworthy company & site, great products.
Posted By KM in August, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
I have been ordering from GemSelect for at least 6 years. Every single order was perfect - every item was as advertized, in perfect condition and arrived well within the specified time frame. I have recommended them to several friends.
Posted By Jim in August, 2018
Source: Bizrate
Overall Rating -> 10 star ratings
Excellent company with excellent website!
Posted By Marcy in August, 2018
Source: Bizrate
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Size and Weight

Gems are always measured in Millimeter (mm)

Dimensions are given as;
length x width x depth,
except for round stones which are;
diameter x depth

Select gems by size, not by weight!
Gem varieties vary in density, so carat weight is not a good indication of size

Note: 1ct = 0.2g

Size Comparison Chart