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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (61): Black Opal Clear All
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ID: 3243981 pcs
2.38ct Black Opal
12.77mm x 8.93mm x 4.78mm
USD 95.20
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ID: 3297904 pcs
2.11ctw Black Opal
6.90mm x 5.00mm x 3.19mm
USD 84.40
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ID: 3245241 pcs
3.57ct Black Opal
12.86mm x 12.12mm x 5.59mm
USD 142.80
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ID: 3302911 pcs
4.11ct Black Opal
16.69mm x 10.84mm x 5.27mm
USD 164.40
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ID: 3298015 pcs
2.44ctw Black Opal
6.95mm x 5.02mm x 2.95mm
USD 97.60
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ID: 3294994 pcs
1.64ctw Black Opal
5.98mm x 4.05mm x 3.26mm
USD 65.60
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ID: 3175931 pcs
4.03ct Black Opal
13.14mm x 12.89mm x 5.65mm
USD 161.20
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ID: 3298045 pcs
2.65ctw Black Opal
6.98mm x 5.00mm x 3.16mm
USD 106.00
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ID: 3297995 pcs
2.67ctw Black Opal
6.98mm x 4.95mm x 3.19mm
USD 106.80
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ID: 3291354 pcs
4.01ctw Black Opal
8.07mm x 6.08mm x 4.28mm
USD 160.40
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ID: 3302521 pcs
5.90ct Black Opal
17.39mm x 11.93mm x 7.15mm
USD 236.00
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ID: 3237121 pcs
4.34ct Black Opal
15.39mm x 10.70mm x 6.15mm
USD 173.60
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ID: 3238651 pcs
4.46ct Black Opal
13.71mm x 12.29mm x 6.39mm
USD 178.40
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ID: 3294924 pcs
1.74ctw Black Opal
5.94mm x 4.04mm x 3.49mm
USD 69.60
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ID: 3193891 pcs
5.56ct Black Opal
21.00mm x 9.49mm x 6.63mm
USD 222.40
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ID: 3326741 pcs
4.10ct Black Opal
14.30mm x 12.72mm x 6.06mm
USD 164.00
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ID: 3175861 pcs
4.22ct Black Opal
17.53mm x 9.63mm x 5.90mm
USD 168.80
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ID: 3302131 pcs
9.42ct Black Opal
17.35mm x 12.77mm x 9.49mm
USD 376.80
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ID: 3292456 pcs
4.50ctw Black Opal
8.00mm x 6.03mm x 3.29mm
USD 180.00
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ID: 3298164 pcs
4.21ctw Black Opal
8.10mm x 6.09mm x 4.23mm
USD 168.40
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ID: 3302511 pcs
5.70ct Black Opal
16.84mm x 12.22mm x 6.75mm
USD 228.00
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Black Opal
Black opal is considered the most valuable of opal varieties. Black opal contains traces of iron oxide and carbon elements not found in other common opals. These combined elements give black opal the unique color properties it is famed for. Black opal is mainly found in Lightning Ridge of NSW, Australia. In 2008, New South Wales declared Black opal as its Official State Gemstone.

Ethiopia is also known to produce treated black opal. The Ethiopian black opal is treated with a smoking process that darkens the color of the opal. The treatment enhances the play of color, rivaling some of Lightning Ridge's opals. The treated Ethiopian black opal is a great value gem because it sells for much less than Australian black opal.

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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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