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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (1851): Opal - Fire Opal, Moss Opal, Opal Doublet, Boulder Opal, Chocolate Opal, Black Opal, Opal in Matrix, Cat's Eye Opal Clear All
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ID: 4843201 pcs
thumb image of 31.5ct Oval Cabochon Multicolor Cat's Eye Opal (ID: 484320)
31.48 ct Cat's Eye Opal
27.1 x 18.7 mm
$ 157.40
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ID: 4941141 pcs
thumb image of 1.1ct Oval Cabochon Yellow Orange Cat's Eye Opal (ID: 494114)
1.07 ct Cat's Eye Opal
8.1 x 6.2 mm
$ 1.75
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ID: 4717434 pcs
thumb image of 1.3ct Oval Facet Yellow Opal (ID: 471743)
1.32 ct Opal
6.1 x 4.1 mm
$ 41.43
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ID: 4505552 pcs
thumb image of 1.5ct Oval Facet Orange Fire Opal (ID: 450555)
1.52 ct Fire Opal
8 x 6 mm
$ 40.71
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ID: 4915231 pcs
thumb image of 1.3ct Cushion Cabochon Pink Opal (ID: 491523)
1.26 ct Opal
8.5 x 7 mm
$ 2.81
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ID: 4843141 pcs
thumb image of 25.4ct Oval Cabochon Honey Orange Cat's Eye Opal (ID: 484314)
25.35 ct Cat's Eye Opal
21.9 x 14.6 mm
$ 126.75
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ID: 4621341 pcs
thumb image of 15.7ct Oval Cabochon Multicolor Opal (ID: 462134)
15.72 ct Opal
19.5 x 17.1 mm
$ 632.89
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ID: 4914171 pcs
thumb image of 1.5ct Oval Cabochon Pink Opal (ID: 491417)
1.45 ct Opal
10.4 x 7.9 mm
$ 3.23
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ID: 4907691 pcs
thumb image of 1.4ct Oval Cabochon Multicolor Black Opal (ID: 490769)
1.41 ct Black Opal
10.1 x 8.1 mm
$ 21.22
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ID: 4617421 pcs
thumb image of 1.5ct Oval Facet Multicolor Opal (ID: 461742)
1.51 ct Opal
10.1 x 8.1 mm
$ 53.39
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ID: 4944961 pcs
thumb image of 47.3ct Oval Cabochon Yellow Cat's Eye Opal (ID: 494496)
47.31 ct Cat's Eye Opal
26.9 x 20 mm
$ 94.62
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ID: 4319042 pcs
thumb image of 1.8ct Oval Facet Orange Fire Opal (ID: 431904)
1.82 ct Fire Opal
9.1 x 7.1 mm
$ 48.39
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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: 4907021 pcs
thumb image of 1.4ct Oval Cabochon Multicolor Black Opal (ID: 490702)
1.41 ct Black Opal
9 x 7.1 mm
$ 21.22
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ID: 4914151 pcs
thumb image of 1.6ct Oval Cabochon Pink Opal (ID: 491415)
1.56 ct Opal
8.5 x 6.8 mm
$ 3.48
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ID: 4774584 pcs
thumb image of 2.3ct Round Cabochon Yellow Opal (ID: 477458)
2.26 ct Opal
6.1 mm
$ 48.16
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ID: 4616101 pcs
thumb image of 1.2ct Oval Facet Multicolor Opal (ID: 461610)
1.23 ct Opal
10.1 x 8 mm
$ 43.49
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ID: 4941131 pcs
thumb image of 1.8ct Oval Cabochon Multicolor Cat's Eye Opal (ID: 494113)
1.81 ct Cat's Eye Opal
8.2 x 6.9 mm
$ 2.97
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ID: 4542201 pcs
thumb image of 0.8ct Oval Facet Orange Fire Opal (ID: 454220)
0.84 ct Fire Opal
7.7 x 6 mm
$ 22.13
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ID: 4621331 pcs
thumb image of 15.4ct Pear Cabochon Multicolor Opal (ID: 462133)
15.39 ct Opal
22.8 x 17.9 mm
$ 619.60
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ID: 4784583 pcs
thumb image of 1.6ct Round Cabochon Multicolor Opal (ID: 478458)
1.59 ct Opal
5.8 mm
$ 55.65
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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