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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (538): Opal Cabochons Fire Opal, Opal, Opal Doublet, Boulder Opal, Chocolate Opal, Black Opal Clear All
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ID: 4291491 pcs
thumb image of 0.8ct Oval Cabochon White Opal (ID: 429149)
0.77 ct Opal
8.1 x 6.1 mm
$ 21.56
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ID: 3682032 pcs
thumb image of 2ct Oval Cabochon Orange Opal (ID: 368203)
1.96 ct Opal
8.9 x 6.9 mm
$ 54.00
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ID: 4662984 pcs
thumb image of 2.8ct Round Cabochon Multicolor Opal (ID: 466298)
2.76 ct Opal
6.8 mm
$ 77.28
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ID: 3804061 pcs
thumb image of 15.9ct Pear Cabochon Yellow Fire Opal (ID: 380406)
15.86 ct Fire Opal
28.8 x 14.2 mm
$ 342.73
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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: 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: 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: 3804051 pcs
thumb image of 21.5ct Pear Cabochon Yellow Fire Opal (ID: 380405)
21.54 ct Fire Opal
29.7 x 16.3 mm
$ 465.48
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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: 4717731 pcs
thumb image of 6.6ct Oval Cabochon Multicolor Black Opal (ID: 471773)
6.55 ct Black Opal
17.5 x 13.3 mm
$ 163.75
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ID: 4622221 pcs
thumb image of 14.5ct Oval Cabochon White Opal (ID: 462222)
14.53 ct Opal
21 x 14.5 mm
$ 584.98
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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: 4736391 pcs
thumb image of 1.2ct Oval Cabochon Multicolor Black Opal (ID: 473639)
1.20 ct Black Opal
9 x 7.1 mm
$ 25.12
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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: 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: 3302481 pcs
thumb image of 5.5ct Pear Cabochon Multicolor Black Opal (ID: 330248)
5.45 ct Black Opal
17.4 x 11.1 mm
$ 163.50
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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: 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: 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: 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: 3690911 pcs
thumb image of 1.1ct Oval Cabochon Orange Opal (ID: 369091)
1.09 ct Opal
8 x 6 mm
$ 29.57
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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

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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