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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: 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: 4619511 pcs
thumb image of 0.7ct Pear Cabochon Multicolor Opal Doublet (ID: 461951)
0.70 ct Opal Doublet
8 x 5 mm
$ 10.54
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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: 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: 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: 4492091 pcs
thumb image of 0.9ct Marquise Cabochon Multicolor Opal Doublet (ID: 449209)
0.89 ct Opal Doublet
10.2 x 5.1 mm
$ 12.99
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ID: 3577841 pcs
thumb image of 9.7ct Shark Fin Cabochon Blue Opal Doublet (ID: 357784)
9.72 ct Opal Doublet
20.7 x 17.3 mm
$ 63.18
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ID: 44935020 pcs
thumb image of 4.3ct Oval Cabochon Multicolor Opal Doublet (ID: 449350)
4.30 ct Opal Doublet
5.3 x 3.2 mm
$ 62.74
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ID: 44935720 pcs
thumb image of 4.3ct Oval Cabochon Multicolor Opal Doublet (ID: 449357)
4.28 ct Opal Doublet
5.3 x 3.3 mm
$ 62.45
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ID: 4469289 pcs
thumb image of 4.3ct Pear Cabochon Multicolor Opal Doublet (ID: 446928)
4.29 ct Opal Doublet
7.1 x 5 mm
$ 64.35
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ID: 4207141 pcs
thumb image of 3.9ct Fancy Cabochon Blue Opal Doublet (ID: 420714)
3.89 ct Opal Doublet
17.9 x 8.3 mm
$ 62.24
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ID: 44694115 pcs
thumb image of 4.6ct Pear Cabochon Multicolor Opal Doublet (ID: 446941)
4.57 ct Opal Doublet
6.1 x 4.1 mm
$ 68.55
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ID: 4468872 pcs
thumb image of 4.4ct Oval Cabochon Blue Opal Doublet (ID: 446887)
4.41 ct Opal Doublet
17.8 x 6.5 mm
$ 66.15
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ID: 4469258 pcs
thumb image of 4.1ct Pear Cabochon Multicolor Opal Doublet (ID: 446925)
4.09 ct Opal Doublet
7.1 x 5 mm
$ 61.35
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ID: 4207131 pcs
thumb image of 4.4ct Fancy Cabochon Multicolor Opal Doublet (ID: 420713)
4.43 ct Opal Doublet
16 x 10 mm
$ 70.88
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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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ID: 3915582 pcs
thumb image of 4.2ct Oval Cabochon Blue Opal Doublet (ID: 391558)
4.22 ct Opal Doublet
14 x 7.5 mm
$ 70.94
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ID: 2940544 pcs
thumb image of 2.4ct Oval Cabochon Multicolor Opal Doublet (ID: 294054)
2.36 ct Opal Doublet
7.1 x 4.9 mm
$ 70.80
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ID: 44935820 pcs
thumb image of 4ct Oval Cabochon Multicolor Opal Doublet (ID: 449358)
4.01 ct Opal Doublet
5.2 x 3.1 mm
$ 58.51
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ID: 4468074 pcs
thumb image of 4.1ct Marquise Cabochon Multicolor Opal Doublet (ID: 446807)
4.12 ct Opal Doublet
11.8 x 6.1 mm
$ 61.80
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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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