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ID: 3579111 pcs
thumb image of 16.6ct Fancy Cabochon Blue Opal Doublet (ID: 357911)
16.57 ct Opal Doublet
27.4 x 20.5 mm
$ 107.70
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ID: 4492881 pcs
thumb image of 5.4ct Marquise Cabochon Blue Opal Doublet (ID: 449288)
5.42 ct Opal Doublet
25.1 x 9.9 mm
$ 79.08
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ID: 3577871 pcs
thumb image of 6.9ct Shark Fin Cabochon Blue Opal Doublet (ID: 357787)
6.85 ct Opal Doublet
22.8 x 13.9 mm
$ 44.52
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ID: 44691120 pcs
thumb image of 7.3ct Oval Cabochon Multicolor Opal Doublet (ID: 446911)
7.26 ct Opal Doublet
6.1 x 4.2 mm
$ 108.90
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ID: 44690920 pcs
thumb image of 7ct Oval Cabochon Multicolor Opal Doublet (ID: 446909)
7.03 ct Opal Doublet
6.1 x 4 mm
$ 105.45
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ID: 4491631 pcs
thumb image of 3ct Fancy Cabochon Multicolor Opal Doublet (ID: 449163)
3.00 ct Opal Doublet
15.9 x 10.8 mm
$ 43.77
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ID: 44691020 pcs
thumb image of 7.4ct Oval Cabochon Multicolor Opal Doublet (ID: 446910)
7.40 ct Opal Doublet
4.2 x 6.1 mm
$ 111.00
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ID: 35309916 pcs
thumb image of 11.6ct Oval Cabochon Blue Opal Doublet (ID: 353099)
11.59 ct Opal Doublet
8.1 x 6.1 mm
$ 52.16
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ID: 44692020 pcs
thumb image of 7.4ct Oval Cabochon Multicolor Opal Doublet (ID: 446920)
7.44 ct Opal Doublet
6.1 x 4.1 mm
$ 111.60
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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: 3625174 pcs
thumb image of 2.3ct Pear Cabochon Multicolor Opal Doublet (ID: 362517)
2.33 ct Opal Doublet
8 x 5 mm
$ 42.57
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ID: 44691620 pcs
thumb image of 7.5ct Oval Cabochon Multicolor Opal Doublet (ID: 446916)
7.51 ct Opal Doublet
6 x 4.1 mm
$ 112.65
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ID: 4492624 pcs
thumb image of 2.8ct Marquise Cabochon Multicolor Opal Doublet (ID: 449262)
2.79 ct Opal Doublet
9.9 x 5 mm
$ 40.71
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ID: 44691220 pcs
thumb image of 7.6ct Oval Cabochon Multicolor Opal Doublet (ID: 446912)
7.56 ct Opal Doublet
6.1 x 4.1 mm
$ 113.40
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ID: 4468156 pcs
thumb image of 2.7ct Pear Cabochon Multicolor Opal Doublet (ID: 446815)
2.68 ct Opal Doublet
7.1 x 5.2 mm
$ 40.20
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ID: 44691720 pcs
thumb image of 7.6ct Oval Cabochon Multicolor Opal Doublet (ID: 446917)
7.61 ct Opal Doublet
6.3 x 4.2 mm
$ 114.15
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ID: 44694015 pcs
thumb image of 5.6ct Oval Cabochon Multicolor Opal Doublet (ID: 446940)
5.55 ct Opal Doublet
6.2 x 4.2 mm
$ 83.25
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ID: 3579721 pcs
thumb image of 6.2ct Fancy Cabochon Blue Opal Doublet (ID: 357972)
6.16 ct Opal Doublet
17.5 x 13.9 mm
$ 40.04
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ID: 44691420 pcs
thumb image of 7.7ct Oval Cabochon Multicolor Opal Doublet (ID: 446914)
7.73 ct Opal Doublet
6.1 x 4.2 mm
$ 115.95
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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: 4468053 pcs
thumb image of 2.6ct Oval Cabochon Multicolor Opal Doublet (ID: 446805)
2.55 ct Opal Doublet
8.1 x 6 mm
$ 38.25
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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

Select gems by size, not by weight!
Gem varieties vary in density, so carat weight is not a good indication of size

Note: 1ct = 0.2g

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