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ID: 39153120 pcs
thumb image of 6.4ct Oval Cabochon Multicolor Opal Doublet (ID: 391531)
6.40 ct Opal Doublet
6 x 4 mm
$ 107.58
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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: 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: 4468321 pcs
thumb image of 2.7ct Trillion Cabochon Multicolor Opal Doublet (ID: 446832)
2.72 ct Opal Doublet
12.6 x 11.3 mm
$ 40.80
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ID: 4492544 pcs
thumb image of 2.4ct Oval Cabochon Multicolor Opal Doublet (ID: 449254)
2.37 ct Opal Doublet
7.1 x 5.1 mm
$ 34.58
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ID: 4493291 pcs
thumb image of 2.9ct Fancy Cabochon Multicolor Opal Doublet (ID: 449329)
2.86 ct Opal Doublet
16.1 x 8.1 mm
$ 41.73
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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: 4491391 pcs
thumb image of 10.6ct Pear Cabochon Multicolor Opal Doublet (ID: 449139)
10.60 ct Opal Doublet
22.5 x 17.9 mm
$ 154.65
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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: 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: 4492831 pcs
thumb image of 5.7ct Fancy Cabochon Multicolor Opal Doublet (ID: 449283)
5.68 ct Opal Doublet
20.6 x 13.4 mm
$ 82.87
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ID: 4468821 pcs
thumb image of 2.9ct Oval Cabochon Multicolor Opal Doublet (ID: 446882)
2.85 ct Opal Doublet
15 x 7.2 mm
$ 42.75
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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: 4468912 pcs
thumb image of 2.9ct Pear Cabochon Multicolor Opal Doublet (ID: 446891)
2.87 ct Opal Doublet
11.8 x 7.7 mm
$ 43.05
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ID: 4468841 pcs
thumb image of 2ct Fancy Cabochon Multicolor Opal Doublet (ID: 446884)
1.97 ct Opal Doublet
16.5 x 7.4 mm
$ 29.55
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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: 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: 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: 3032262 pcs
thumb image of 1.8ct Oval Cabochon Multicolor Opal Doublet (ID: 303226)
1.79 ct Opal Doublet
8 x 5.9 mm
$ 44.75
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ID: 3913402 pcs
thumb image of 5.5ct Pear Cabochon Blue Opal Doublet (ID: 391340)
5.50 ct Opal Doublet
14.4 x 10 mm
$ 92.46
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ID: 4468761 pcs
thumb image of 2.1ct Fancy Cabochon Multicolor Opal Doublet (ID: 446876)
2.11 ct Opal Doublet
14.5 x 8.1 mm
$ 31.65
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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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