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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (1324): Opal Fire Opal, Moss Opal, Opal, Opal Doublet, Boulder Opal, Chocolate Opal, Black Opal, Opal in Matrix Clear All
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ID: 4540314 pcs
thumb image of 2ct Oval Facet Orange Fire Opal (ID: 454031)
2.02 ct Fire Opal
7.1 x 5.3 mm
$ 53.21
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ID: 3303114 pcs
thumb image of 3.2ct Oval Cabochon Multicolor Chocolate Opal (ID: 330311)
3.23 ct Chocolate Opal
8 x 6.1 mm
$ 96.90
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ID: 3686012 pcs
thumb image of 1.8ct Oval Cabochon Multicolor Opal (ID: 368601)
1.81 ct Opal
8.2 x 6.3 mm
$ 49.50
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ID: 3306394 pcs
thumb image of 2.6ct Oval Cabochon Multicolor Chocolate Opal (ID: 330639)
2.56 ct Chocolate Opal
7.1 x 5.1 mm
$ 76.80
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ID: 4322521 pcs
thumb image of 0.8ct Oval Facet Orange Fire Opal (ID: 432252)
0.79 ct Fire Opal
7.8 x 5.9 mm
$ 21.01
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ID: 3830931 pcs
thumb image of 10.9ct Pear Cabochon Yellow Fire Opal (ID: 383093)
10.94 ct Fire Opal
22.1 x 13.7 mm
$ 233.57
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ID: 3306304 pcs
thumb image of 2.4ct Oval Cabochon Multicolor Chocolate Opal (ID: 330630)
2.39 ct Chocolate Opal
7.1 x 5.1 mm
$ 71.70
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ID: 4495592 pcs
thumb image of 1.7ct Oval Facet Orange Fire Opal (ID: 449559)
1.65 ct Fire Opal
8.1 x 6.1 mm
$ 44.20
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ID: 4629164 pcs
thumb image of 1.7ct Oval Facet Multicolor Opal (ID: 462916)
1.69 ct Opal
7 x 5.1 mm
$ 67.60
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ID: 4622191 pcs
thumb image of 14.2ct Pear Cabochon Multicolor Opal (ID: 462219)
14.21 ct Opal
20.7 x 16.5 mm
$ 572.09
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ID: 3830861 pcs
thumb image of 10.3ct Pear Cabochon Yellow Orange Fire Opal (ID: 383086)
10.30 ct Fire Opal
22.4 x 12.6 mm
$ 219.91
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ID: 3306404 pcs
thumb image of 2.3ct Oval Cabochon Multicolor Chocolate Opal (ID: 330640)
2.29 ct Chocolate Opal
7 x 5 mm
$ 68.70
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ID: 4666782 pcs
thumb image of 2.7ct Round Cabochon Multicolor Opal (ID: 466678)
2.72 ct Opal
8 mm
$ 76.16
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ID: 3833881 pcs
thumb image of 0.7ct Oval Facet Reddish Orange Fire Opal (ID: 383388)
0.66 ct Fire Opal
8.2 x 5.7 mm
$ 21.09
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ID: 3303264 pcs
thumb image of 3.5ct Oval Cabochon Multicolor Chocolate Opal (ID: 330326)
3.46 ct Chocolate Opal
8.1 x 6.1 mm
$ 103.80
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ID: 3804041 pcs
thumb image of 15.1ct Pear Cabochon Yellow Fire Opal (ID: 380404)
15.07 ct Fire Opal
27.2 x 14.9 mm
$ 325.66
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ID: 3306424 pcs
thumb image of 2.8ct Oval Cabochon Multicolor Chocolate Opal (ID: 330642)
2.83 ct Chocolate Opal
7 x 5.1 mm
$ 84.90
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ID: 4544232 pcs
thumb image of 1.4ct Oval Facet Orange Fire Opal (ID: 454423)
1.42 ct Fire Opal
7.9 x 6.1 mm
$ 37.40
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ID: 3306294 pcs
thumb image of 2.1ct Oval Cabochon Multicolor Chocolate Opal (ID: 330629)
2.14 ct Chocolate Opal
7.1 x 4.6 mm
$ 64.20
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ID: 4544675 pcs
thumb image of 1.6ct Oval Facet Orange Fire Opal (ID: 454467)
1.60 ct Fire Opal
6.6 x 4.9 mm
$ 42.14
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ID: 3303454 pcs
thumb image of 3.6ct Oval Cabochon Multicolor Chocolate Opal (ID: 330345)
3.57 ct Chocolate Opal
8.1 x 6.1 mm
$ 107.10
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Opal
More than any other gem, each opal is 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