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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (375): Opal Cabochons Fire Opal, Opal, Opal Doublet, Boulder Opal, Chocolate Opal, Black Opal Clear All
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ID: 4672701 pcs
thumb image of 18.3ct Oval Cabochon White Opal (ID: 467270)
18.33 ct Opal
20 x 16.9 mm
$ 737.97
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ID: 3682962 pcs
thumb image of 1.9ct Oval Cabochon Orange Opal (ID: 368296)
1.87 ct Opal
8 x 6.1 mm
$ 51.52
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ID: 4622141 pcs
thumb image of 16.8ct Oval Cabochon White Opal (ID: 462214)
16.83 ct Opal
20.8 x 16.6 mm
$ 677.58
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ID: 3689526 pcs
thumb image of 3.2ct Oval Cabochon Orange Opal (ID: 368952)
3.16 ct Opal
7 x 5.1 mm
$ 85.73
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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: 4319921 pcs
thumb image of 0.9ct Oval Cabochon White Opal (ID: 431992)
0.85 ct Opal
7.2 x 6.1 mm
$ 23.80
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ID: 3689124 pcs
thumb image of 2.4ct Oval Cabochon Orange Opal (ID: 368912)
2.36 ct Opal
7.2 x 5.1 mm
$ 64.55
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ID: 2653731 pcs
thumb image of 1ct Oval Cabochon Yellow Opal (ID: 265373)
1.02 ct Opal
8.6 x 6.6 mm
$ 24.48
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ID: 3682992 pcs
thumb image of 2.9ct Oval Cabochon Orange Opal (ID: 368299)
2.85 ct Opal
9 x 7.1 mm
$ 78.52
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ID: 4468033 pcs
thumb image of 2ct Pear Cabochon Multicolor Opal Doublet (ID: 446803)
2.03 ct Opal Doublet
8.2 x 5.1 mm
$ 30.45
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ID: 3306915 pcs
thumb image of 2.7ct Oval Cabochon Multicolor Chocolate Opal (ID: 330691)
2.71 ct Chocolate Opal
7 x 5.1 mm
$ 81.30
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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: 3804011 pcs
thumb image of 15.8ct Oval Cabochon Yellow Fire Opal (ID: 380401)
15.79 ct Fire Opal
22.3 x 14.9 mm
$ 341.22
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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: 3303334 pcs
thumb image of 3.4ct Oval Cabochon Multicolor Chocolate Opal (ID: 330333)
3.38 ct Chocolate Opal
8 x 6.1 mm
$ 101.40
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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: 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: 3306884 pcs
thumb image of 2.5ct Oval Cabochon Multicolor Chocolate Opal (ID: 330688)
2.50 ct Chocolate Opal
7 x 5.1 mm
$ 75.00
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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: 3804031 pcs
thumb image of 15.6ct Pear Cabochon Yellow Fire Opal (ID: 380403)
15.63 ct Fire Opal
29.4 x 14.1 mm
$ 337.76
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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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Opal Cabochons
More than any other gem, each opal is distinctly an individual. No other stone has as rich and varied a folklore. Opals are also the most delicate gems commonly worn. They require special care to ensure their health and longevity.

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.

Opal is relatively soft, with a rating of 5.5-6.5 on the Mohs scale. Despite its frequent use in rings, opal is a poor choice for a ring stone; it is much better suited to earrings, pins, and pendants.

Major suppliers include Australia, Brazil, Mexico, and the US. Values are normally determined by the presence and nature of color flashes.
English speaking customer support only

Toll Free - USA & Canada only:
1-800-464-1640

International:
+66-39303404

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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