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ID: 4491601 pcs
thumb image of 3.4ct Pear Cabochon Multicolor Opal Doublet (ID: 449160)
3.36 ct Opal Doublet
15.2 x 10.1 mm
$ 49.02
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ID: 4206191 pcs
thumb image of 9.4ct Fancy Cabochon Multicolor Opal Doublet (ID: 420619)
9.40 ct Opal Doublet
26.2 x 13.3 mm
$ 150.40
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ID: 3577861 pcs
thumb image of 5.5ct Fancy Cabochon Blue Opal Doublet (ID: 357786)
5.53 ct Opal Doublet
17 x 13.2 mm
$ 35.94
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ID: 44935120 pcs
thumb image of 7.2ct Oval Cabochon Multicolor Opal Doublet (ID: 449351)
7.18 ct Opal Doublet
6.2 x 4.1 mm
$ 104.76
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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: 4468228 pcs
thumb image of 3.3ct Pear Cabochon Multicolor Opal Doublet (ID: 446822)
3.29 ct Opal Doublet
7 x 4.9 mm
$ 49.35
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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: 4468791 pcs
thumb image of 2.3ct Fancy Cabochon Multicolor Opal Doublet (ID: 446879)
2.33 ct Opal Doublet
14.3 x 10.5 mm
$ 34.95
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ID: 2939984 pcs
thumb image of 2.3ct Oval Cabochon Multicolor Opal Doublet (ID: 293998)
2.30 ct Opal Doublet
6.9 x 5 mm
$ 69.00
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ID: 4492791 pcs
thumb image of 4.4ct Fancy Cabochon Blue Opal Doublet (ID: 449279)
4.36 ct Opal Doublet
19.1 x 7.9 mm
$ 63.61
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ID: 4491881 pcs
thumb image of 2.9ct Fancy Cabochon Multicolor Opal Doublet (ID: 449188)
2.92 ct Opal Doublet
19.3 x 7.9 mm
$ 42.60
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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: 4468013 pcs
thumb image of 3.1ct Oval Cabochon Multicolor Opal Doublet (ID: 446801)
3.07 ct Opal Doublet
7.9 x 6 mm
$ 46.05
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ID: 4468521 pcs
thumb image of 4.2ct Pear Cabochon Multicolor Opal Doublet (ID: 446852)
4.23 ct Opal Doublet
18.3 x 11.8 mm
$ 63.45
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ID: 4491621 pcs
thumb image of 3.4ct Fancy Cabochon Multicolor Opal Doublet (ID: 449162)
3.40 ct Opal Doublet
19 x 10.8 mm
$ 49.61
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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: 4492851 pcs
thumb image of 6.5ct Fancy Cabochon Multicolor Opal Doublet (ID: 449285)
6.48 ct Opal Doublet
21.5 x 14.9 mm
$ 94.54
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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: 4468601 pcs
thumb image of 4.2ct Fancy Cabochon Multicolor Opal Doublet (ID: 446860)
4.22 ct Opal Doublet
21.2 x 9.3 mm
$ 63.30
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ID: 4491911 pcs
thumb image of 3.4ct Fancy Cabochon Multicolor Opal Doublet (ID: 449191)
3.40 ct Opal Doublet
18 x 9.7 mm
$ 49.61
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ID: 4493021 pcs
thumb image of 1.6ct Pear Cabochon Multicolor Opal Doublet (ID: 449302)
1.63 ct Opal Doublet
12.4 x 7.9 mm
$ 23.78
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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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