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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (58): Black Opal Black Opal Clear All
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ID: 3297864 pcs
2.47ctw Black Opal
7.01 x 5.03 x 3.62mm
USD 98.80
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ID: 3298164 pcs
4.21ctw Black Opal
8.10 x 6.09 x 4.23mm
USD 168.40
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ID: 3193891 pcs
5.56ct Black Opal
21.00 x 9.49 x 6.63mm
USD 222.40
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ID: 3529651 pcs
2.56ct Black Opal
11.02 x 10.49 x 5.06mm
USD 102.40
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ID: 3297955 pcs
2.70ctw Black Opal
6.96 x 5.03 x 3.36mm
USD 108.00
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ID: 4411332 pcs
3.03ctw Black Opal
9.08 x 7.08 x 4.92mm
USD 121.20
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ID: 3245291 pcs
4.89ct Black Opal
15.22 x 9.69 x 6.08mm
USD 195.60
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ID: 3634661 pcs
3.80ct Black Opal
15.19 x 9.47 x 5.29mm
USD 152.00
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ID: 3634641 pcs
3.14ct Black Opal
15.41 x 8.97 x 5.01mm
USD 125.60
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ID: 3193871 pcs
5.05ct Black Opal
15.99 x 10.67 x 6.30mm
USD 202.00
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ID: 3243981 pcs
2.38ct Black Opal
12.77 x 8.93 x 4.78mm
USD 95.20
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ID: 3294934 pcs
1.62ctw Black Opal
5.90 x 4.03 x 3.39mm
USD 64.80
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ID: 3291334 pcs
3.44ctw Black Opal
8.03 x 6.04 x 3.96mm
USD 137.60
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ID: 3175931 pcs
4.03ct Black Opal
13.14 x 12.89 x 5.65mm
USD 161.20
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ID: 3297894 pcs
2.69ctw Black Opal
6.98 x 5.04 x 3.64mm
USD 107.60
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ID: 3298045 pcs
2.65ctw Black Opal
6.98 x 5.00 x 3.16mm
USD 106.00
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ID: 3302131 pcs
9.42ct Black Opal
17.35 x 12.77 x 9.49mm
USD 376.80
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ID: 3302491 pcs
7.56ct Black Opal
19.49 x 11.90 x 7.41mm
USD 302.40
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ID: 3291324 pcs
2.31ctw Black Opal
6.95 x 4.99 x 3.33mm
USD 92.40
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ID: 3730701 pcs
5.59ct Black Opal
19.68 x 10.27 x 6.49mm
USD 223.60
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ID: 3291314 pcs
2.79ctw Black Opal
7.00 x 5.04 x 3.76mm
USD 111.60
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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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