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ID: 4469258 pcs
thumb image of 4.1ct Pear Cabochon Multicolor Opal Doublet (ID: 446925)
4.09ct Opal Doublet
7.11 x 5.04 x 1.98mm
USD 61.35
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ID: 4468892 pcs
thumb image of 4.3ct Pear Cabochon Multicolor Opal Doublet (ID: 446889)
4.31ct Opal Doublet
18.44 x 5.36 x 2.58mm
USD 64.65
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ID: 4206541 pcs
thumb image of 2.3ct Fancy Cabochon Multicolor Opal Doublet (ID: 420654)
2.33ct Opal Doublet
12.74 x 8.94 x 2.26mm
USD 37.28
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ID: 4468311 pcs
thumb image of 2.1ct Pear Cabochon Multicolor Opal Doublet (ID: 446831)
2.05ct Opal Doublet
12.02 x 9.12 x 2.44mm
USD 30.75
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ID: 3915582 pcs
thumb image of 4.2ct Oval Cabochon Multicolor Opal Doublet (ID: 391558)
4.22ct Opal Doublet
13.96 x 7.49 x 2.34mm
USD 70.94
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ID: 4468581 pcs
thumb image of 4.1ct Pear Cabochon Multicolor Opal Doublet (ID: 446858)
4.12ct Opal Doublet
18.11 x 10.11 x 3.12mm
USD 61.80
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ID: 4467981 pcs
thumb image of 3.2ct Oval Cabochon Multicolor Opal Doublet (ID: 446798)
3.20ct Opal Doublet
15.09 x 11.15 x 2.91mm
USD 48.00
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ID: 4468781 pcs
thumb image of 2.6ct Fancy Cabochon Multicolor Opal Doublet (ID: 446878)
2.62ct Opal Doublet
15.20 x 8.87 x 2.56mm
USD 39.30
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ID: 4468271 pcs
thumb image of 2.1ct Oval Cabochon Multicolor Opal Doublet (ID: 446827)
2.12ct Opal Doublet
13.18 x 9.08 x 2.39mm
USD 31.80
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ID: 20132516 pcs
thumb image of 11.3ct Oval Cabochon Multicolor Opal Doublet (ID: 201325)
11.31ct Opal Doublet
8.07 x 6.03 x 1.43mm
USD 50.90
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ID: 4468281 pcs
thumb image of 2.4ct Fancy Cabochon Multicolor Opal Doublet (ID: 446828)
2.35ct Opal Doublet
12.70 x 12.46 x 2.58mm
USD 35.25
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ID: 4468622 pcs
thumb image of 1.2ct Oval Cabochon Multicolor Opal Doublet (ID: 446862)
1.21ct Opal Doublet
7.22 x 5.14 x 1.73mm
USD 18.15
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ID: 3579131 pcs
thumb image of 8.9ct Fancy Cabochon Multicolor Opal Doublet (ID: 357913)
8.91ct Opal Doublet
20.38 x 17.50 x 3.49mm
USD 57.92
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ID: 4468301 pcs
thumb image of 2.7ct Fancy Cabochon Multicolor Opal Doublet (ID: 446830)
2.67ct Opal Doublet
17.10 x 9.92 x 2.26mm
USD 40.05
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ID: 4468136 pcs
thumb image of 4.6ct Marquise Cabochon Multicolor Opal Doublet (ID: 446813)
4.59ct Opal Doublet
10.16 x 5.09 x 2.11mm
USD 68.85
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ID: 2940544 pcs
thumb image of 2.4ct Oval Cabochon Multicolor Opal Doublet (ID: 294054)
2.36ct Opal Doublet
7.12 x 4.90 x 1.60mm
USD 70.80
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ID: 44691220 pcs
thumb image of 7.6ct Oval Cabochon Multicolor Opal Doublet (ID: 446912)
7.56ct Opal Doublet
6.14 x 4.06 x 1.73mm
USD 113.40
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ID: 4468801 pcs
thumb image of 2.5ct Fancy Cabochon Multicolor Opal Doublet (ID: 446880)
2.45ct Opal Doublet
15.14 x 9.52 x 2.51mm
USD 36.75
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ID: 4468491 pcs
thumb image of 4.4ct Fancy Cabochon Multicolor Opal Doublet (ID: 446849)
4.39ct Opal Doublet
17.12 x 10.78 x 2.94mm
USD 65.85
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ID: 4468197 pcs
thumb image of 5.2ct Marquise Cabochon Multicolor Opal Doublet (ID: 446819)
5.19ct Opal Doublet
10.15 x 5.12 x 1.86mm
USD 77.85
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ID: 35309916 pcs
thumb image of 11.6ct Oval Cabochon Multicolor Opal Doublet (ID: 353099)
11.59ct Opal Doublet
8.06 x 6.05 x 1.69mm
USD 52.16
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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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