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Gemtype Color Shape Weight Size Date Clarity Price Origin
You Selected (23): Black Opal Black Opal Clear All
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ID: 3297864 pcs
thumb image of 2.5ct Oval Cabochon Multicolor Black Opal (ID: 329786)
2.47 ct Black Opal
7 x 5 mm
$ 98.80
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ID: 3297844 pcs
thumb image of 2.5ct Oval Cabochon Multicolor Black Opal (ID: 329784)
2.54 ct Black Opal
7 x 5.1 mm
$ 101.60
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ID: 3291324 pcs
thumb image of 2.3ct Oval Cabochon Multicolor Black Opal (ID: 329132)
2.31 ct Black Opal
7 x 5 mm
$ 92.40
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ID: 3294964 pcs
thumb image of 1.7ct Oval Cabochon Multicolor Black Opal (ID: 329496)
1.74 ct Black Opal
5.9 x 4 mm
$ 69.60
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ID: 3297995 pcs
thumb image of 2.7ct Oval Cabochon Multicolor Black Opal (ID: 329799)
2.67 ct Black Opal
7 x 5 mm
$ 106.80
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ID: 3298055 pcs
thumb image of 2.5ct Oval Cabochon Multicolor Black Opal (ID: 329805)
2.49 ct Black Opal
6.9 x 5 mm
$ 99.60
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ID: 3294934 pcs
thumb image of 1.6ct Oval Cabochon Multicolor Black Opal (ID: 329493)
1.62 ct Black Opal
5.9 x 4 mm
$ 64.80
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ID: 4648902 pcs
thumb image of 2.1ct Oval Cabochon Multicolor Black Opal (ID: 464890)
2.09 ct Black Opal
8 x 6.1 mm
$ 62.70
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ID: 3193901 pcs
thumb image of 4ct Marquise Cabochon Multicolor Black Opal (ID: 319390)
3.99 ct Black Opal
18.7 x 8.3 mm
$ 159.60
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ID: 3297955 pcs
thumb image of 2.7ct Oval Cabochon Multicolor Black Opal (ID: 329795)
2.70 ct Black Opal
7 x 5 mm
$ 108.00
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ID: 4648872 pcs
thumb image of 1.9ct Oval Cabochon Multicolor Black Opal (ID: 464887)
1.94 ct Black Opal
8.1 x 6.1 mm
$ 58.20
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ID: 3238641 pcs
thumb image of 5.2ct Pear Cabochon Multicolor Black Opal (ID: 323864)
5.21 ct Black Opal
16 x 10.9 mm
$ 208.40
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ID: 4648922 pcs
thumb image of 1.8ct Oval Cabochon Multicolor Black Opal (ID: 464892)
1.80 ct Black Opal
8 x 6.2 mm
$ 54.00
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ID: 3302481 pcs
thumb image of 5.5ct Pear Cabochon Multicolor Black Opal (ID: 330248)
5.45 ct Black Opal
17.4 x 11.1 mm
$ 218.00
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ID: 4648892 pcs
thumb image of 1.7ct Oval Cabochon Multicolor Black Opal (ID: 464889)
1.71 ct Black Opal
8.1 x 6.2 mm
$ 51.30
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ID: 4649344 pcs
thumb image of 1.7ct Round Cabochon Multicolor Black Opal (ID: 464934)
1.65 ct Black Opal
5.1 mm
$ 49.50
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ID: 3302521 pcs
thumb image of 5.9ct Pear Cabochon Multicolor Black Opal (ID: 330252)
5.90 ct Black Opal
17.4 x 11.9 mm
$ 236.00
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ID: 4649474 pcs
thumb image of 1.6ct Round Cabochon Multicolor Black Opal (ID: 464947)
1.56 ct Black Opal
5 mm
$ 46.80
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ID: 4587981 pcs
thumb image of 6.7ct Oval Cabochon Multicolor Black Opal (ID: 458798)
6.74 ct Black Opal
14.7 x 12 mm
$ 269.60
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ID: 3298154 pcs
thumb image of 5.7ct Oval Cabochon Multicolor Black Opal (ID: 329815)
5.72 ct Black Opal
9.1 x 7.1 mm
$ 228.80
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ID: 4648983 pcs
thumb image of 1.2ct Round Cabochon Multicolor Black Opal (ID: 464898)
1.15 ct Black Opal
5.1 mm
$ 34.50
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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

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Gem varieties vary in density, so carat weight is not a good indication of size

Note: 1ct = 0.2g

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