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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: 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: 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: 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: 3237121 pcs
thumb image of 4.3ct Oval Cabochon Multicolor Black Opal (ID: 323712)
4.34ct Black Opal
15.39 x 10.70 x 6.15mm
USD 173.60
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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: 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: 3297975 pcs
thumb image of 3.1ct Oval Cabochon Multicolor Black Opal (ID: 329797)
3.11ct Black Opal
6.95 x 5.04 x 3.58mm
USD 124.40
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ID: 3291354 pcs
thumb image of 4ct Oval Cabochon Multicolor Black Opal (ID: 329135)
4.01ct Black Opal
8.07 x 6.08 x 4.28mm
USD 160.40
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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: 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: 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: 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: 3292456 pcs
thumb image of 4.5ct Oval Cabochon Multicolor Black Opal (ID: 329245)
4.50ct Black Opal
8.00 x 6.03 x 3.29mm
USD 180.00
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ID: 3302491 pcs
thumb image of 7.6ct Pear Cabochon Multicolor Black Opal (ID: 330249)
7.56ct Black Opal
19.49 x 11.90 x 7.41mm
USD 302.40
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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: 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: 3244031 pcs
thumb image of 3ct Pear Cabochon Multicolor Black Opal (ID: 324403)
2.96ct Black Opal
13.19 x 10.24 x 5.36mm
USD 118.40
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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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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: 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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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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