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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (1462): Opal Fire Opal, Moss Opal, Opal, Opal Doublet, Boulder Opal, Chocolate Opal, Black Opal, Opal in Matrix Clear All
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ID: 3460011 pcs
thumb image of 0.9ct Oval Facet Multicolor Opal (ID: 346001)
0.93ct Opal
8.26 x 6.23 x 4.68mm
USD 37.20
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ID: 3695172 pcs
thumb image of 1.7ct Oval Facet Reddish Orange Fire Opal (ID: 369517)
1.73ct Fire Opal
8.00 x 6.01 x 4.30mm
USD 56.10
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ID: 3702671 pcs
thumb image of 2.5ct Oval Facet Reddish Orange Fire Opal (ID: 370267)
2.52ct Fire Opal
12.23 x 9.11 x 5.55mm
USD 113.40
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ID: 3182671 pcs
thumb image of 1.1ct Oval Facet Multicolor Opal (ID: 318267)
1.07ct Opal
8.86 x 7.02 x 4.65mm
USD 44.94
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ID: 4468023 pcs
thumb image of 3.4ct Marquise Cabochon Multicolor Opal Doublet (ID: 446802)
3.37ct Opal Doublet
11.69 x 5.72 x 2.27mm
USD 50.55
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ID: 4207131 pcs
thumb image of 4.4ct Fancy Cabochon Multicolor Opal Doublet (ID: 420713)
4.43ct Opal Doublet
16.04 x 10.04 x 2.61mm
USD 70.88
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ID: 3306884 pcs
thumb image of 2.5ct Oval Cabochon Multicolor Chocolate Opal (ID: 330688)
2.50ct Chocolate Opal
7.00 x 5.11 x 3.75mm
USD 75.00
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ID: 4321031 pcs
thumb image of 0.6ct Oval Cabochon Multicolor Opal (ID: 432103)
0.63ct Opal
6.50 x 5.70 x 3.85mm
USD 17.64
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ID: 3081241 pcs
thumb image of 1.7ct Pear Facet Multicolor Opal (ID: 308124)
1.73ct Opal
11.87 x 8.09 x 5.06mm
USD 74.39
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ID: 4293091 pcs
thumb image of 0.7ct Oval Cabochon Multicolor Opal (ID: 429309)
0.71ct Opal
8.14 x 6.06 x 3.39mm
USD 19.88
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ID: 4468156 pcs
thumb image of 2.7ct Pear Cabochon Multicolor Opal Doublet (ID: 446815)
2.68ct Opal Doublet
7.11 x 5.23 x 2.43mm
USD 40.20
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ID: 3227901 pcs
thumb image of 14ct Oval Cabochon Multicolor Boulder Opal (ID: 322790)
13.97ct Boulder Opal
40.10 x 13.00 x 3.23mm
USD 377.19
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ID: 4206111 pcs
thumb image of 8.4ct Fancy Cabochon Multicolor Opal Doublet (ID: 420611)
8.39ct Opal Doublet
21.52 x 15.45 x 2.60mm
USD 134.24
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ID: 3672354 pcs
thumb image of 2.8ct Oval Facet Reddish Orange Fire Opal (ID: 367235)
2.76ct Fire Opal
7.50 x 5.88 x 3.25mm
USD 92.05
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ID: 3683032 pcs
thumb image of 2.3ct Oval Cabochon Multicolor Opal (ID: 368303)
2.25ct Opal
9.20 x 7.17 x 3.68mm
USD 61.99
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ID: 4313741 pcs
thumb image of 0.7ct Oval Cabochon Multicolor Opal (ID: 431374)
0.71ct Opal
6.63 x 5.84 x 3.72mm
USD 14.20
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ID: 4089501 pcs
thumb image of 8.9ct Oval Cabochon Multicolor Boulder Opal (ID: 408950)
8.87ct Boulder Opal
13.37 x 11.14 x 6.67mm
USD 62.09
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ID: 4206331 pcs
thumb image of 8.2ct Fancy Cabochon Multicolor Boulder Opal (ID: 420633)
8.17ct Boulder Opal
19.97 x 10.51 x 4.79mm
USD 49.02
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ID: 3118541 pcs
thumb image of 1.6ct Oval Facet Multicolor Opal (ID: 311854)
1.64ct Opal
10.16 x 8.01 x 5.02mm
USD 65.60
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ID: 4468662 pcs
thumb image of 1.8ct Oval Cabochon Multicolor Opal Doublet (ID: 446866)
1.82ct Opal Doublet
8.38 x 6.11 x 1.90mm
USD 27.30
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ID: 4422351 pcs
thumb image of 8.9ct Pear Cabochon Multicolor Opal in Matrix (ID: 442235)
8.87ct Opal in Matrix
14.93 x 14.78 x 8.00mm
USD 132.34
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Opal
Opal, more than any other gem, each opalis 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