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ID: 3302481 pcs
thumb image of 5.5ct Pear Cabochon Multicolor Black Opal (ID: 330248)
5.45ct Black Opal
17.44 x 11.13 x 6.23mm
USD 218.00
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ID: 3529651 pcs
thumb image of 2.6ct Trillion Cabochon Multicolor Black Opal (ID: 352965)
2.56ct Black Opal
11.02 x 10.49 x 5.06mm
USD 102.40
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ID: 3302521 pcs
thumb image of 5.9ct Pear Cabochon Multicolor Black Opal (ID: 330252)
5.90ct Black Opal
17.39 x 11.93 x 7.15mm
USD 236.00
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ID: 3298055 pcs
thumb image of 2.5ct Oval Cabochon Multicolor Black Opal (ID: 329805)
2.49ct Black Opal
6.92 x 5.00 x 2.95mm
USD 99.60
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ID: 3238641 pcs
thumb image of 5.2ct Pear Cabochon Multicolor Black Opal (ID: 323864)
5.21ct Black Opal
16.03 x 10.89 x 6.93mm
USD 208.40
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ID: 3297844 pcs
thumb image of 2.5ct Oval Cabochon Multicolor Black Opal (ID: 329784)
2.54ct Black Opal
6.99 x 5.05 x 3.53mm
USD 101.60
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ID: 3193891 pcs
thumb image of 5.6ct Marquise Cabochon Multicolor Black Opal (ID: 319389)
5.56ct Black Opal
21.00 x 9.49 x 6.63mm
USD 222.40
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ID: 3298045 pcs
thumb image of 2.7ct Oval Cabochon Multicolor Black Opal (ID: 329804)
2.65ct Black Opal
6.98 x 5.00 x 3.16mm
USD 106.00
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ID: 3730701 pcs
thumb image of 5.6ct Marquise Cabochon Multicolor Black Opal (ID: 373070)
5.59ct Black Opal
19.68 x 10.27 x 6.49mm
USD 223.60
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ID: 3243991 pcs
thumb image of 2.9ct Pear Cabochon Multicolor Black Opal (ID: 324399)
2.90ct Black Opal
12.48 x 8.86 x 6.22mm
USD 116.00
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ID: 3294924 pcs
thumb image of 1.7ct Oval Cabochon Multicolor Black Opal (ID: 329492)
1.74ct Black Opal
5.94 x 4.04 x 3.49mm
USD 69.60
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ID: 3302451 pcs
thumb image of 6.7ct Oval Cabochon Multicolor Black Opal (ID: 330245)
6.74ct Black Opal
14.72 x 11.91 x 8.13mm
USD 269.60
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ID: 3291334 pcs
thumb image of 3.4ct Oval Cabochon Multicolor Black Opal (ID: 329133)
3.44ct Black Opal
8.03 x 6.04 x 3.96mm
USD 137.60
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ID: 3243981 pcs
thumb image of 2.4ct Pear Cabochon Multicolor Black Opal (ID: 324398)
2.38ct Black Opal
12.77 x 8.93 x 4.78mm
USD 95.20
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ID: 3294994 pcs
thumb image of 1.6ct Oval Cabochon Multicolor Black Opal (ID: 329499)
1.64ct Black Opal
5.98 x 4.05 x 3.26mm
USD 65.60
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ID: 3297955 pcs
thumb image of 2.7ct Oval Cabochon Multicolor Black Opal (ID: 329795)
2.70ct Black Opal
6.96 x 5.03 x 3.36mm
USD 108.00
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ID: 3238631 pcs
thumb image of 2.2ct Pear Cabochon Multicolor Black Opal (ID: 323863)
2.19ct Black Opal
15.00 x 7.57 x 4.53mm
USD 87.60
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ID: 3291364 pcs
thumb image of 4.3ct Oval Cabochon Multicolor Black Opal (ID: 329136)
4.29ct Black Opal
8.16 x 6.17 x 4.39mm
USD 171.60
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ID: 3297894 pcs
thumb image of 2.7ct Oval Cabochon Multicolor Black Opal (ID: 329789)
2.69ct Black Opal
6.98 x 5.04 x 3.64mm
USD 107.60
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ID: 3291324 pcs
thumb image of 2.3ct Oval Cabochon Multicolor Black Opal (ID: 329132)
2.31ct Black Opal
6.95 x 4.99 x 3.33mm
USD 92.40
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ID: 3243941 pcs
thumb image of 2.2ct Pear Cabochon Multicolor Black Opal (ID: 324394)
2.18ct Black Opal
13.15 x 9.07 x 4.42mm
USD 87.20
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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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