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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (1414): Opal Fire Opal, Moss Opal, Opal, Opal Doublet, Boulder Opal, Chocolate Opal, Black Opal, Opal in Matrix Clear All
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ID: 3166151 pcs
2.23ct Opal
11.87 x 8.37 x 5.87mm
USD 93.66
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ID: 4291511 pcs
0.74ct Opal
7.98 x 6.10 x 3.21mm
USD 20.72
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ID: 4311491 pcs
1.41ct Fire Opal
10.60 x 7.72 x 4.69mm
USD 49.28
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ID: 4319752 pcs
1.41ct Fire Opal
7.81 x 6.07 x 3.98mm
USD 37.49
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ID: 4289791 pcs
0.85ct Opal
7.90 x 6.00 x 4.18mm
USD 23.80
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ID: 3669181 pcs
2.89ct Fire Opal
10.94 x 9.15 x 6.00mm
USD 112.71
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ID: 3183171 pcs
1.43ct Opal
10.05 x 8.03 x 4.89mm
USD 60.06
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ID: 3696751 pcs
4.93ct Fire Opal
13.81 x 11.14 x 6.68mm
USD 159.88
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ID: 3695261 pcs
1.87ct Fire Opal
9.01 x 5.49mm
USD 60.64
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ID: 4319521 pcs
0.94ct Opal
7.18 x 6.51 x 4.16mm
USD 26.32
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ID: 3690961 pcs
1.43ct Opal
9.93 x 8.06 x 4.14mm
USD 38.80
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ID: 4207791 pcs
14.72ct Boulder Opal
22.91 x 11.58 x 6.23mm
USD 88.32
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ID: 4322954 pcs
1.43ct Fire Opal
6.85 x 5.02 x 2.79mm
USD 38.02
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ID: 3212891 pcs
0.81ct Opal
9.03 x 7.05 x 3.74mm
USD 32.40
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ID: 4324563 pcs
2.12ct Fire Opal
8.06 x 6.14 x 3.44mm
USD 56.37
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ID: 3219561 pcs
3.53ct Opal
14.28 x 11.05 x 4.97mm
USD 105.90
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ID: 3094821 pcs
0.78ct Opal
8.40 x 6.20 x 3.61mm
USD 33.54
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ID: 4292621 pcs
0.61ct Opal
8.03 x 6.02 x 2.95mm
USD 17.08
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ID: 3094781 pcs
0.77ct Opal
8.09 x 6.05 x 3.79mm
USD 33.11
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ID: 3472961 pcs
0.81ct Opal
8.00 x 7.49 x 4.04mm
USD 34.02
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ID: 3694391 pcs
1.95ct Fire Opal
10.44 x 8.39 x 5.23mm
USD 63.24
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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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International:
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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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