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ID: 4206131 pcs
thumb image of 8.5ct Fancy Cabochon Multicolor Opal Doublet (ID: 420613)
8.47ct Opal Doublet
20.04 x 14.31 x 3.07mm
USD 135.52
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ID: 3915922 pcs
thumb image of 9.5ct Oval Cabochon Multicolor Opal Doublet (ID: 391592)
9.53ct Opal Doublet
21.91 x 9.72 x 2.47mm
USD 211.09
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ID: 3032262 pcs
thumb image of 1.8ct Oval Cabochon Multicolor Opal Doublet (ID: 303226)
1.79ct Opal Doublet
8.04 x 5.90 x 1.82mm
USD 44.75
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ID: 39153720 pcs
thumb image of 6.5ct Oval Cabochon Multicolor Opal Doublet (ID: 391537)
6.46ct Opal Doublet
6.05 x 4.26 x 1.99mm
USD 108.59
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ID: 3913222 pcs
thumb image of 5.5ct Oval Cabochon Multicolor Opal Doublet (ID: 391322)
5.49ct Opal Doublet
17.53 x 7.56 x 2.55mm
USD 121.60
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ID: 3636684 pcs
thumb image of 2ct Oval Cabochon Multicolor Opal Doublet (ID: 363668)
1.96ct Opal Doublet
6.91 x 4.92 x 1.77mm
USD 37.38
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ID: 4004014 pcs
thumb image of 1.9ct Pear Cabochon Multicolor Opal Doublet (ID: 400401)
1.85ct Opal Doublet
7.07 x 4.88 x 1.82mm
USD 33.80
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ID: 3577871 pcs
thumb image of 6.9ct Fancy Cabochon Multicolor Opal Doublet (ID: 357787)
6.85ct Opal Doublet
22.81 x 13.89 x 3.39mm
USD 44.52
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ID: 3913402 pcs
thumb image of 5.5ct Pear Cabochon Multicolor Opal Doublet (ID: 391340)
5.50ct Opal Doublet
14.39 x 10.04 x 2.53mm
USD 92.46
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ID: 3577861 pcs
thumb image of 5.5ct Fancy Cabochon Multicolor Opal Doublet (ID: 357786)
5.53ct Opal Doublet
17.04 x 13.23 x 3.26mm
USD 35.94
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ID: 3090154 pcs
thumb image of 2.2ct Oval Cabochon Multicolor Opal Doublet (ID: 309015)
2.21ct Opal Doublet
7.04 x 5.01 x 1.88mm
USD 55.25
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ID: 3579131 pcs
thumb image of 8.9ct Fancy Cabochon Multicolor Opal Doublet (ID: 357913)
8.91ct Opal Doublet
20.38 x 17.50 x 3.49mm
USD 57.92
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ID: 4207141 pcs
thumb image of 3.9ct Fancy Cabochon Multicolor Opal Doublet (ID: 420714)
3.89ct Opal Doublet
17.88 x 8.25 x 2.56mm
USD 62.24
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ID: 3579111 pcs
thumb image of 16.6ct Fancy Cabochon Multicolor Opal Doublet (ID: 357911)
16.57ct Opal Doublet
27.40 x 20.52 x 3.84mm
USD 107.70
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ID: 4287654 pcs
thumb image of 2.1ct Oval Cabochon Multicolor Opal Doublet (ID: 428765)
2.12ct Opal Doublet
6.84 x 4.98 x 1.65mm
USD 49.14
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ID: 3579161 pcs
thumb image of 9.1ct Fancy Cabochon Multicolor Opal Doublet (ID: 357916)
9.11ct Opal Doublet
24.38 x 12.36 x 3.49mm
USD 59.22
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ID: 20132516 pcs
thumb image of 11.3ct Oval Cabochon Multicolor Opal Doublet (ID: 201325)
11.31ct Opal Doublet
8.07 x 6.03 x 1.43mm
USD 50.90
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ID: 20124216 pcs
thumb image of 12.1ct Oval Cabochon Multicolor Opal Doublet (ID: 201242)
12.07ct Opal Doublet
8.05 x 6.04 x 1.64mm
USD 54.32
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ID: 4207081 pcs
thumb image of 3ct Fancy Cabochon Multicolor Opal Doublet (ID: 420708)
2.97ct Opal Doublet
16.92 x 9.16 x 2.50mm
USD 47.52
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ID: 3623314 pcs
thumb image of 2.5ct Pear Cabochon Multicolor Opal Doublet (ID: 362331)
2.52ct Opal Doublet
8.09 x 5.10 x 2.00mm
USD 46.04
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ID: 3625174 pcs
thumb image of 2.3ct Pear Cabochon Multicolor Opal Doublet (ID: 362517)
2.33ct Opal Doublet
8.03 x 5.02 x 1.68mm
USD 42.57
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Opal Doublet
More than any other gem, each opal is distinctly an individual. No other stone has as rich and varied a folklore. Opals are also the most delicate gems commonly worn. They require special care to insure their health and longevity.

Opal's fire was long thought to be the result of iridescence. However, with the advent of scanning electron microscopes, we now know that it is a result of diffraction.

Opal is relatively soft, with a rating of 5.5-6.5 on the Mohs Scale. Despite its frequent use in rings, opal is a poor choice for a ring stone; it is much better suited to earrings, pins, and pendants.

Major suppliers include Australia, Brazil, Mexico, and the US. Values are normally determined by the presence and nature of color flashes.

An opal doublet consists of a slice of opal glued to a black backing, designed to imitate the appearance of a solid black opal. Adhering the slice of opal to a black backing causes the colour to become much darker and more vibrant. Opal doublets are highly regarded as an inexpensive alternative to solid opals which are very expensive in larger sizes.
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Size and Weight

Gems are always measured in Millimeter (mm)

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length x width x depth,
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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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