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Doublet (lapidary)

A doublet is a type of gem composed in two sections. It is sometimes used to imitate other, more expensive gems.

A garnet and glass doublet uses a top portion of natural garnet fused to any color of glass to imitate a gem. The color of glass used in the doublet is all that is seen, the garnet provides no color. If seen in reflected light, a separation line may be seen. The harder garnet makes the stones more durable. In the case of opal doublets, a backing layer of onyx or matrix (ironstone) gives the more fragile opal layer support and can make the opal look darker and higher quality

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Doublet_(lapidary)". A list of authors is available in Wikipedia.
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