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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (66): Black Opal Clear All
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ID: 3297672 pcs
1.18ctw Black Opal
7.02mm x 5.05mm x 3.44mm
USD 47.20
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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: 3291334 pcs
3.44ctw Black Opal
8.03mm x 6.04mm x 3.96mm
USD 137.60
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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: 3292456 pcs
4.50ctw Black Opal
8.00mm x 6.03mm x 3.29mm
USD 180.00
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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: 3245291 pcs
4.89ct Black Opal
15.22mm x 9.69mm x 6.08mm
USD 195.60
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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: 3294924 pcs
1.74ctw Black Opal
5.94mm x 4.04mm x 3.49mm
USD 69.60
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ID: 3243991 pcs
2.90ct Black Opal
12.48mm x 8.86mm x 6.22mm
USD 116.00
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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: 3634641 pcs
3.14ct Black Opal
15.41mm x 8.97mm x 5.01mm
USD 125.60
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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: 3297975 pcs
3.11ctw Black Opal
6.95mm x 5.04mm x 3.58mm
USD 124.40
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ID: 3242511 pcs
4.92ct Black Opal
13.28mm x 10.69mm x 6.99mm
USD 196.80
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ID: 3529671 pcs
2.64ct Black Opal
13.02mm x 8.44mm x 5.15mm
USD 105.60
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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: 3237121 pcs
4.34ct Black Opal
15.39mm x 10.70mm x 6.15mm
USD 173.60
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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: 3193901 pcs
3.99ct Black Opal
18.74mm x 8.27mm x 6.82mm
USD 159.60
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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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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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