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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (1469): Opal Fire Opal, Moss Opal, Opal, Opal Doublet, Boulder Opal, Chocolate Opal, Black Opal, Opal in Matrix Clear All
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ID: 3687002 pcs
thumb image of 1.4ct Oval Cabochon Multicolor Opal (ID: 368700)
1.35ct Opal
8.04 x 5.99 x 2.86mm
USD 36.92
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ID: 44694420 pcs
thumb image of 6.8ct Oval Cabochon Multicolor Opal Doublet (ID: 446944)
6.82ct Opal Doublet
6.08 x 4.20 x 1.71mm
USD 102.30
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ID: 4321041 pcs
thumb image of 0.6ct Oval Cabochon Multicolor Opal (ID: 432104)
0.57ct Opal
6.90 x 5.57 x 3.30mm
USD 15.96
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ID: 3804051 pcs
thumb image of 21.5ct Pear Cabochon Yellow Fire Opal (ID: 380405)
21.54ct Fire Opal
29.68 x 16.29 x 10.03mm
USD 465.48
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ID: 3672184 pcs
thumb image of 3ct Oval Facet Reddish Orange Fire Opal (ID: 367218)
2.97ct Fire Opal
7.07 x 5.76 x 3.92mm
USD 99.05
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ID: 3832341 pcs
thumb image of 0.8ct Round Facet Reddish Orange Fire Opal (ID: 383234)
0.83ct Fire Opal
7.45 x 3.44mm
USD 26.58
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ID: 3833821 pcs
thumb image of 1ct Oval Facet Reddish Orange Fire Opal (ID: 383382)
0.95ct Fire Opal
7.88 x 6.43 x 4.10mm
USD 30.36
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ID: 3199551 pcs
thumb image of 1.2ct Oval Facet Multicolor Opal (ID: 319955)
1.18ct Opal
9.05 x 6.92 x 5.00mm
USD 53.10
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ID: 4467971 pcs
thumb image of 4ct Oval Cabochon Multicolor Opal Doublet (ID: 446797)
3.97ct Opal Doublet
15.01 x 10.00 x 2.85mm
USD 59.55
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ID: 3674002 pcs
thumb image of 2.4ct Oval Facet Reddish Orange Fire Opal (ID: 367400)
2.43ct Fire Opal
8.34 x 6.54 x 4.56mm
USD 81.11
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ID: 3686042 pcs
thumb image of 1.5ct Oval Cabochon Multicolor Opal (ID: 368604)
1.48ct Opal
7.92 x 5.81 x 3.68mm
USD 40.48
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ID: 3811701 pcs
thumb image of 4ct Fancy Cabochon Multicolor Opal Doublet (ID: 381170)
4.00ct Opal Doublet
19.52 x 8.91 x 2.82mm
USD 73.36
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ID: 3220381 pcs
thumb image of 54.7ct Oval Cabochon Multicolor Boulder Opal (ID: 322038)
54.71ct Boulder Opal
27.25 x 23.29 x 10.15mm
USD 382.97
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ID: 3302521 pcs
thumb image of 5.9ct Pear Cabochon Multicolor Black Opal (ID: 330252)
5.90ct Black Opal
17.39 x 11.93 x 7.15mm
USD 236.00
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ID: 44691920 pcs
thumb image of 7.9ct Oval Cabochon Multicolor Opal Doublet (ID: 446919)
7.93ct Opal Doublet
6.11 x 4.10 x 1.85mm
USD 118.95
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ID: 3148371 pcs
thumb image of 1.5ct Oval Facet Multicolor Opal (ID: 314837)
1.47ct Opal
10.05 x 7.92 x 4.96mm
USD 58.80
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ID: 4207531 pcs
thumb image of 25.6ct Fancy Cabochon Multicolor Boulder Opal (ID: 420753)
25.57ct Boulder Opal
24.83 x 15.84 x 7.78mm
USD 153.42
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ID: 4468382 pcs
thumb image of 2ct Oval Cabochon Multicolor Opal Doublet (ID: 446838)
1.95ct Opal Doublet
8.09 x 6.02 x 2.51mm
USD 29.25
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ID: 4341851 pcs
thumb image of 13.9ct Trillion Cabochon Orange Fire Opal (ID: 434185)
13.88ct Fire Opal
20.76 x 19.93 x 8.07mm
USD 485.80
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ID: 3460121 pcs
thumb image of 1ct Oval Facet Multicolor Opal (ID: 346012)
0.97ct Opal
8.19 x 6.17 x 4.90mm
USD 38.80
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ID: 4421201 pcs
thumb image of 3.8ct Baguette Cabochon Multicolor Opal in Matrix (ID: 442120)
3.82ct Opal in Matrix
12.98 x 11.65 x 3.44mm
USD 56.99
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Opal
Opal, more than any other gem, each opalis distinctly individual. No other gemstone has such rich and varied a folklore. Opals are also the most delicate gems commonly worn. They require special care to ensure their health and longevity. There are many varieties of opal, including black opal, white opal, common opal (potch), chocolate opal, boulder opal, opal doublet, opal triplet, fire opal and opal in matrix.

Opal's fire was long thought to be the result of iridescence. However, with the advent of scanning electron microscopes, we now know that it is a result of diffraction, and is known in the gem trade as play of color. Opal is relatively soft, with a rating of 5.5-6.5 on the Mohs scale. Despite its frequent use in gemstone rings, opal is not the greatest choice as a ring stone; it is however, very-well suited for other types of gemstone jewelry, including gemstone earrings, pins and gemstone pendants.

Major suppliers include Australia, Brazil, Ethiopia, Mexico, Peru and the United States. Values are normally determined by the presence and nature of color flashes, except in the case of Mexican fire opal, where body color is most valued.
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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