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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (67): Black Opal Clear All
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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: 3298045 pcs
2.65ctw Black Opal
6.98mm x 5.00mm x 3.16mm
USD 106.00
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ID: 3529461 pcs
3.62ct Black Opal
13.43mm x 9.10mm x 5.13mm
USD 144.80
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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: 3237121 pcs
4.34ct Black Opal
15.39mm x 10.70mm x 6.15mm
USD 173.60
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ID: 3297894 pcs
2.69ctw Black Opal
6.98mm x 5.04mm x 3.64mm
USD 107.60
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ID: 3291304 pcs
3.10ctw Black Opal
8.00mm x 6.06mm x 3.37mm
USD 124.00
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ID: 3302491 pcs
7.56ct Black Opal
19.49mm x 11.90mm x 7.41mm
USD 302.40
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ID: 3730701 pcs
5.59ct Black Opal
19.68mm x 10.27mm x 6.49mm
USD 223.60
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ID: 3296142 pcs
1.30ctw Black Opal
7.06mm x 4.98mm x 3.47mm
USD 52.00
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ID: 3243951 pcs
1.72ct Black Opal
11.55mm x 8.17mm x 4.66mm
USD 68.80
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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: 3326721 pcs
6.12ct Black Opal
15.84mm x 11.50mm x 6.80mm
USD 244.80
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ID: 3529651 pcs
2.56ct Black Opal
11.02mm x 10.49mm x 5.06mm
USD 102.40
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ID: 3244031 pcs
2.96ct Black Opal
13.19mm x 10.24mm x 5.36mm
USD 118.40
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ID: 3245291 pcs
4.89ct Black Opal
15.22mm x 9.69mm x 6.08mm
USD 195.60
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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: 3297864 pcs
2.47ctw Black Opal
7.01mm x 5.03mm x 3.62mm
USD 98.80
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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: 3238711 pcs
6.79ct Black Opal
15.44mm x 12.85mm x 7.51mm
USD 271.60
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ID: 3238631 pcs
2.19ct Black Opal
15.00mm x 7.57mm x 4.53mm
USD 87.60
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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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