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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (72): Black Opal Clear All
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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: 3298154 pcs
5.72ctw Black Opal
9.10mm x 7.09mm x 4.59mm
USD 228.80
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ID: 3634661 pcs
3.80ct Black Opal
15.19mm x 9.47mm x 5.29mm
USD 152.00
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ID: 3238641 pcs
5.21ct Black Opal
16.03mm x 10.89mm x 6.93mm
USD 208.40
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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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ID: 3193871 pcs
5.05ct Black Opal
15.99mm x 10.67mm x 6.30mm
USD 202.00
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ID: 3302081 pcs
12.31ct Black Opal
19.43mm x 14.61mm x 9.33mm
USD 492.40
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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: 3529461 pcs
3.62ct Black Opal
13.43mm x 9.10mm x 5.13mm
USD 144.80
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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: 3238651 pcs
4.46ct Black Opal
13.71mm x 12.29mm x 6.39mm
USD 178.40
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ID: 3291324 pcs
2.31ctw Black Opal
6.95mm x 4.99mm x 3.33mm
USD 92.40
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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: 3294984 pcs
1.56ctw Black Opal
5.89mm x 4.00mm x 3.33mm
USD 62.40
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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: 3291364 pcs
4.29ctw Black Opal
8.16mm x 6.17mm x 4.39mm
USD 171.60
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ID: 3302891 pcs
3.98ct Black Opal
16.03mm x 10.34mm x 5.89mm
USD 159.20
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ID: 3302481 pcs
5.45ct Black Opal
17.44mm x 11.13mm x 6.23mm
USD 218.00
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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: 3297904 pcs
2.11ctw Black Opal
6.90mm x 5.00mm x 3.19mm
USD 84.40
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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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