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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (222): Australian Opal Gems Opal, Opal Doublet, Boulder Opal, Black Opal Clear All
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ID: 3915942 pcs
thumb image of 9.4ct Round Cabochon Blue Opal Doublet (ID: 391594)
9.35 ct Opal Doublet
15.2 mm
$ 207.10
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ID: 3915922 pcs
thumb image of 9.5ct Oval Cabochon Blue Opal Doublet (ID: 391592)
9.53 ct Opal Doublet
21.9 x 9.7 mm
$ 211.09
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ID: 4004014 pcs
thumb image of 1.9ct Pear Cabochon Multicolor Opal Doublet (ID: 400401)
1.85 ct Opal Doublet
7.1 x 4.9 mm
$ 33.80
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ID: 4491391 pcs
thumb image of 10.6ct Pear Cabochon Multicolor Opal Doublet (ID: 449139)
10.60 ct Opal Doublet
22.5 x 17.9 mm
$ 154.65
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ID: 4618621 pcs
thumb image of 0.7ct Oval Cabochon Multicolor Opal Doublet (ID: 461862)
0.65 ct Opal Doublet
7.3 x 5.3 mm
$ 9.78
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ID: 4468751 pcs
thumb image of 2.4ct Fancy Cabochon Multicolor Opal Doublet (ID: 446875)
2.40 ct Opal Doublet
15.1 x 9.6 mm
$ 36.00
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ID: 4492111 pcs
thumb image of 1ct Marquise Cabochon Multicolor Opal Doublet (ID: 449211)
0.95 ct Opal Doublet
12.1 x 5.9 mm
$ 13.86
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ID: 4468064 pcs
thumb image of 2.5ct Marquise Cabochon Multicolor Opal Doublet (ID: 446806)
2.47 ct Opal Doublet
9.8 x 4.8 mm
$ 37.05
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ID: 3579091 pcs
thumb image of 37.2ct Fancy Cabochon Blue Opal Doublet (ID: 357909)
37.15 ct Opal Doublet
42.3 x 27.5 mm
$ 241.48
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ID: 4619591 pcs
thumb image of 0.9ct Pear Cabochon Multicolor Opal Doublet (ID: 461959)
0.87 ct Opal Doublet
9.9 x 5.9 mm
$ 13.09
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ID: 4492101 pcs
thumb image of 0.9ct Marquise Cabochon Multicolor Opal Doublet (ID: 449210)
0.90 ct Opal Doublet
9.8 x 5.1 mm
$ 13.13
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ID: 44691420 pcs
thumb image of 7.7ct Oval Cabochon Multicolor Opal Doublet (ID: 446914)
7.73 ct Opal Doublet
6.1 x 4.2 mm
$ 115.95
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ID: 4206221 pcs
thumb image of 12.4ct Half Moon Cabochon Multicolor Opal Doublet (ID: 420622)
12.44 ct Opal Doublet
41.5 x 9 mm
$ 199.04
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ID: 44691920 pcs
thumb image of 7.9ct Oval Cabochon Multicolor Opal Doublet (ID: 446919)
7.93 ct Opal Doublet
6.1 x 4.1 mm
$ 118.95
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ID: 3652231 pcs
thumb image of 13.5ct Fancy Cabochon Multicolor Boulder Opal (ID: 365223)
13.52 ct Boulder Opal
26.5 x 11.8 mm
$ 94.64
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ID: 4618581 pcs
thumb image of 0.8ct Marquise Cabochon Multicolor Opal Doublet (ID: 461858)
0.75 ct Opal Doublet
10.2 x 5.2 mm
$ 11.29
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ID: 4206211 pcs
thumb image of 7.9ct Shark Fin Cabochon Multicolor Opal Doublet (ID: 420621)
7.85 ct Opal Doublet
21.7 x 14.2 mm
$ 125.60
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ID: 3108151 pcs
thumb image of 16.3ct Oval Cabochon Multicolor Boulder Opal (ID: 310815)
16.32 ct Boulder Opal
18.7 x 14.7 mm
$ 114.24
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ID: 4206711 pcs
thumb image of 15.6ct Oval Cabochon Multicolor Boulder Opal (ID: 420671)
15.56 ct Boulder Opal
19.3 x 14.3 mm
$ 93.36
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ID: 4495261 pcs
thumb image of 16.8ct Oval Cabochon Multicolor Boulder Opal (ID: 449526)
16.77 ct Boulder Opal
27.1 x 16 mm
$ 117.39
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ID: 4491411 pcs
thumb image of 8ct Fancy Cabochon Multicolor Opal Doublet (ID: 449141)
8.04 ct Opal Doublet
21.9 x 13.5 mm
$ 117.30
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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.
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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