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ID: 3915922 pcs
thumb image of 9.5ct Oval Cabochon Blue Opal Doublet (ID: 391592)
9.53 ct Opal Doublet
21.9 x 9.7 mm
$ 211.09
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ID: 4468033 pcs
thumb image of 2ct Pear Cabochon Multicolor Opal Doublet (ID: 446803)
2.03 ct Opal Doublet
8.2 x 5.1 mm
$ 30.45
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ID: 4206201 pcs
thumb image of 8ct Fancy Cabochon Multicolor Opal Doublet (ID: 420620)
7.99 ct Opal Doublet
19.2 x 14.1 mm
$ 127.84
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ID: 3913222 pcs
thumb image of 5.5ct Oval Cabochon Blue Opal Doublet (ID: 391322)
5.49 ct Opal Doublet
17.5 x 7.6 mm
$ 121.60
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ID: 44691920 pcs
thumb image of 7.9ct Oval Cabochon Multicolor Opal Doublet (ID: 446919)
7.93 ct Opal Doublet
6.1 x 4.1 mm
$ 118.95
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ID: 4469342 pcs
thumb image of 15.7ct Fancy Cabochon Blue Opal Doublet (ID: 446934)
15.67 ct Opal Doublet
26.1 x 11 mm
$ 235.05
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ID: 4492564 pcs
thumb image of 2.2ct Oval Cabochon Multicolor Opal Doublet (ID: 449256)
2.15 ct Opal Doublet
7 x 5.1 mm
$ 31.37
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ID: 4618621 pcs
thumb image of 0.7ct Oval Cabochon Multicolor Opal Doublet (ID: 461862)
0.65 ct Opal Doublet
7.3 x 5.3 mm
$ 9.78
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ID: 4594251 pcs
thumb image of 9ct Pear Cabochon Multicolor Opal Doublet (ID: 459425)
8.99 ct Opal Doublet
23.3 x 17.1 mm
$ 131.16
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ID: 3579091 pcs
thumb image of 37.2ct Fancy Cabochon Blue Opal Doublet (ID: 357909)
37.15 ct Opal Doublet
42.3 x 27.5 mm
$ 241.48
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ID: 4206111 pcs
thumb image of 8.4ct Fancy Cabochon Multicolor Opal Doublet (ID: 420611)
8.39 ct Opal Doublet
21.5 x 15.5 mm
$ 134.24
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ID: 4492101 pcs
thumb image of 0.9ct Marquise Cabochon Multicolor Opal Doublet (ID: 449210)
0.90 ct Opal Doublet
9.8 x 5.1 mm
$ 13.13
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ID: 4004014 pcs
thumb image of 1.9ct Pear Cabochon Multicolor Opal Doublet (ID: 400401)
1.85 ct Opal Doublet
7.1 x 4.9 mm
$ 33.80
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ID: 39160420 pcs
thumb image of 7.4ct Oval Cabochon Multicolor Opal Doublet (ID: 391604)
7.43 ct Opal Doublet
6.2 x 4.1 mm
$ 124.90
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ID: 4618571 pcs
thumb image of 0.9ct Marquise Cabochon Multicolor Opal Doublet (ID: 461857)
0.87 ct Opal Doublet
10.1 x 5 mm
$ 13.09
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ID: 4206181 pcs
thumb image of 10.2ct Shark Fin Cabochon Multicolor Opal Doublet (ID: 420618)
10.21 ct Opal Doublet
25 x 14.1 mm
$ 163.36
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ID: 4206221 pcs
thumb image of 12.4ct Half Moon Cabochon Multicolor Opal Doublet (ID: 420622)
12.44 ct Opal Doublet
41.5 x 9 mm
$ 199.04
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ID: 3915942 pcs
thumb image of 9.4ct Round Cabochon Blue Opal Doublet (ID: 391594)
9.35 ct Opal Doublet
15.2 mm
$ 207.10
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ID: 4492614 pcs
thumb image of 2.2ct Oval Cabochon Multicolor Opal Doublet (ID: 449261)
2.24 ct Opal Doublet
7.2 x 5.1 mm
$ 32.68
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ID: 4619531 pcs
thumb image of 0.5ct Pear Cabochon Multicolor Opal Doublet (ID: 461953)
0.49 ct Opal Doublet
7.9 x 5 mm
$ 7.37
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ID: 2496675 pcs
thumb image of 3.6ct Oval Cabochon Blue Opal Doublet (ID: 249667)
3.60 ct Opal Doublet
7.9 x 6 mm
$ 16.20
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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)

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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