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: Opal Doublet
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ID: 4468136 pcs
thumb image of 4.6ct Marquise Cabochon Multicolor Opal Doublet (ID: 446813)
4.59 ct Opal Doublet
10.2 x 5.1 mm
$ 68.85
Item in Stock
ID: 4468095 pcs
thumb image of 2.4ct Oval Cabochon Multicolor Opal Doublet (ID: 446809)
2.40 ct Opal Doublet
6.8 x 4.9 mm
$ 36.00
Item in Stock
ID: 4491411 pcs
thumb image of 8ct Fancy Cabochon Multicolor Opal Doublet (ID: 449141)
8.04 ct Opal Doublet
21.9 x 13.5 mm
$ 117.30
Item in Stock
ID: 44935920 pcs
thumb image of 4.1ct Oval Cabochon Multicolor Opal Doublet (ID: 449359)
4.13 ct Opal Doublet
5.2 x 3.2 mm
$ 60.26
Item in Stock
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
Item in Stock
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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