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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (1644): Opal Fire Opal, Moss Opal, Opal, Opal Doublet, Boulder Opal, Chocolate Opal, Black Opal Clear All
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ID: 3652521 pcs
10.04ct Boulder Opal
15.22mm x 12.06mm x 6.30mm
USD 70.28
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ID: 3697941 pcs
2.61ct Fire Opal
11.16mm x 9.17mm x 5.72mm
USD 84.64
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ID: 4321522 pcs
1.31ctw Fire Opal
8.03mm x 6.13mm x 3.30mm
USD 34.83
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ID: 4055291 pcs
1.49ct Fire Opal
10.20mm x 7.98mm x 4.69mm
USD 35.25
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ID: 4291041 pcs
0.92ct Opal
8.04mm x 6.04mm x 3.88mm
USD 25.76
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ID: 4293091 pcs
0.71ct Opal
8.14mm x 6.06mm x 3.39mm
USD 19.88
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ID: 4207801 pcs
10.63ct Boulder Opal
16.63mm x 12.34mm x 6.04mm
USD 63.78
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ID: 4310831 pcs
0.76ct Opal
6.52mm x 4.14mm
USD 15.20
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ID: 4293831 pcs
0.79ct Opal
8.15mm x 6.16mm x 3.70mm
USD 22.12
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ID: 3194751 pcs
1.84ct Opal
11.04mm x 8.13mm x 5.49mm
USD 62.56
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ID: 3502811 pcs
13.56ct Fire Opal
16.13mm x 14.80mm x 10.64mm
USD 678.00
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ID: 3303104 pcs
3.76ctw Chocolate Opal
8.12mm x 6.11mm x 3.84mm
USD 112.80
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ID: 3082061 pcs
1.45ct Opal
11.38mm x 7.91mm x 4.89mm
USD 62.35
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ID: 4288092 pcs
1.57ctw Opal
8.18mm x 6.11mm x 3.36mm
USD 43.96
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ID: 4206721 pcs
12.14ct Boulder Opal
16.61mm x 13.33mm x 6.65mm
USD 72.84
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ID: 4322051 pcs
0.41ct Fire Opal
5.96mm x 3.59mm
USD 10.90
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ID: 4288112 pcs
1.63ctw Opal
8.24mm x 6.20mm x 3.60mm
USD 45.64
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ID: 3698971 pcs
2.16ct Opal
11.13mm x 9.12mm x 5.26mm
USD 90.72
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ID: 3695791 pcs
3.32ct Fire Opal
11.79mm x 10.10mm x 6.61mm
USD 107.67
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ID: 3670391 pcs
2.57ct Fire Opal
10.43mm x 9.12mm x 5.96mm
USD 85.71
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ID: 3652301 pcs
17.55ct Boulder Opal
19.43mm x 13.28mm x 8.39mm
USD 122.85
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Opal
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:
+66-39340503

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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