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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: 3175931 pcs
thumb image of 4ct Trillion Cabochon Multicolor Black Opal (ID: 317593)
4.03ct Black Opal
13.14 x 12.89 x 5.65mm
USD 161.20
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ID: 3302501 pcs
thumb image of 7.4ct Pear Cabochon Multicolor Black Opal (ID: 330250)
7.39ct Black Opal
15.56 x 11.40 x 8.76mm
USD 295.60
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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: 3297985 pcs
thumb image of 2.4ct Oval Cabochon Multicolor Black Opal (ID: 329798)
2.36ct Black Opal
6.95 x 5.01 x 2.80mm
USD 94.40
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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: 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: 3294934 pcs
thumb image of 1.6ct Oval Cabochon Multicolor Black Opal (ID: 329493)
1.62ct Black Opal
5.90 x 4.03 x 3.39mm
USD 64.80
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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: 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: 3297995 pcs
thumb image of 2.7ct Oval Cabochon Multicolor Black Opal (ID: 329799)
2.67ct Black Opal
6.98 x 4.95 x 3.19mm
USD 106.80
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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: 3298154 pcs
thumb image of 5.7ct Oval Cabochon Multicolor Black Opal (ID: 329815)
5.72ct Black Opal
9.10 x 7.09 x 4.59mm
USD 228.80
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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: 3529671 pcs
thumb image of 2.6ct Pear Cabochon Multicolor Black Opal (ID: 352967)
2.64ct Black Opal
13.02 x 8.44 x 5.15mm
USD 105.60
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ID: 3298015 pcs
thumb image of 2.4ct Oval Cabochon Multicolor Black Opal (ID: 329801)
2.44ct Black Opal
6.95 x 5.02 x 2.95mm
USD 97.60
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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: 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: 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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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: 3245291 pcs
thumb image of 4.9ct Cushion Cabochon Multicolor Black Opal (ID: 324529)
4.89ct Black Opal
15.22 x 9.69 x 6.08mm
USD 195.60
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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

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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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