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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (1746): Opal Fire Opal, Moss Opal, Opal, Opal Doublet, Boulder Opal, Chocolate Opal, Black Opal, Opal in Matrix Clear All
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ID: 3673121 pcs
thumb image of 1.2ct Round Facet Reddish Orange Fire Opal (ID: 367312)
1.20 ct Fire Opal
7.6 mm
$ 40.06
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ID: 4704181 pcs
thumb image of 3.5ct Oval Cabochon Yellow Dendrite Moss Opal (ID: 470418)
3.53 ct Moss Opal
11.2 x 10.3 mm
$ 17.65
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ID: 4622231 pcs
thumb image of 14.4ct Oval Cabochon Yellow Opal (ID: 462223)
14.39 ct Opal
22.2 x 13.6 mm
$ 579.34
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ID: 4702151 pcs
thumb image of 3.7ct Pear Cabochon Yellow Dendrite Moss Opal (ID: 470215)
3.69 ct Moss Opal
14.2 x 11.6 mm
$ 18.45
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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: 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: 4731581 pcs
thumb image of 1.4ct Oval Cabochon Multicolor Black Opal (ID: 473158)
1.38 ct Black Opal
9.9 x 7.8 mm
$ 28.88
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ID: 4423851 pcs
thumb image of 4.9ct Cushion Cabochon Multicolor Opal in Matrix (ID: 442385)
4.94 ct Opal in Matrix
11.1 x 10.8 mm
$ 73.70
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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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ID: 4775334 pcs
thumb image of 1.8ct Round Cabochon Yellow Opal (ID: 477533)
1.80 ct Opal
5.9 mm
$ 38.36
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ID: 4616031 pcs
thumb image of 1.7ct Oval Facet Multicolor Opal (ID: 461603)
1.66 ct Opal
11.1 x 8.9 mm
$ 58.70
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ID: 3303254 pcs
thumb image of 3ct Oval Cabochon Multicolor Chocolate Opal (ID: 330325)
3.00 ct Chocolate Opal
7.9 x 6.1 mm
$ 90.00
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ID: 3804071 pcs
thumb image of 18.4ct Pear Cabochon Yellow Fire Opal (ID: 380407)
18.36 ct Fire Opal
31.3 x 15.4 mm
$ 396.76
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ID: 4703181 pcs
thumb image of 3.1ct Oval Cabochon Yellow Dendrite Moss Opal (ID: 470318)
3.11 ct Moss Opal
12 x 8.7 mm
$ 15.55
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ID: 3674511 pcs
thumb image of 1.4ct Oval Facet Reddish Orange Fire Opal (ID: 367451)
1.36 ct Fire Opal
8.6 x 7 mm
$ 45.40
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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: 4421221 pcs
thumb image of 4.3ct Cushion Cabochon Multicolor Opal in Matrix (ID: 442122)
4.26 ct Opal in Matrix
12.7 x 10.2 mm
$ 63.56
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ID: 4495784 pcs
thumb image of 2.1ct Oval Facet Orange Fire Opal (ID: 449578)
2.10 ct Fire Opal
7.1 x 5.2 mm
$ 56.26
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ID: 3303034 pcs
thumb image of 4.2ct Oval Cabochon Multicolor Chocolate Opal (ID: 330303)
4.20 ct Chocolate Opal
8.1 x 6.1 mm
$ 126.00
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ID: 4435091 pcs
thumb image of 5.8ct Trillion Facet Orange Fire Opal (ID: 443509)
5.81 ct Fire Opal
14.3 x 14 mm
$ 188.42
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ID: 4322511 pcs
thumb image of 0.9ct Oval Facet Orange Fire Opal (ID: 432251)
0.93 ct Fire Opal
8 x 6 mm
$ 24.73
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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

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