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- Doublet_(lapidary) abstract "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, as the garnet provides no color. If seen in reflected light, a separation line may be seen. A 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.Garnet and glass doublets were first used around 1850 when it was noted that molten glass would adhere to garnet. It was a popular imitation for all types of gems in many colors because the color of the glass became the only color you saw. They were still being produced into the early 1900s until actual synthetic gems were introduced. "Gems Made by Man" by Kurt Nassau, circa 1980, is an excellent source.".
- Doublet_(lapidary) thumbnail Opal_doublet.jpg?width=300.
- Doublet_(lapidary) wikiPageID "1942629".
- Doublet_(lapidary) wikiPageRevisionID "527416498".
- Doublet_(lapidary) hasPhotoCollection Doublet_(lapidary).
- Doublet_(lapidary) subject Category:Gemstones.
- Doublet_(lapidary) type Crystal114883206.
- Doublet_(lapidary) type Gem114699752.
- Doublet_(lapidary) type Gemstones.
- Doublet_(lapidary) type Matter100020827.
- Doublet_(lapidary) type PhysicalEntity100001930.
- Doublet_(lapidary) type Solid115046900.
- Doublet_(lapidary) comment "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, as the garnet provides no color. If seen in reflected light, a separation line may be seen. A harder garnet makes the stones more durable.".
- Doublet_(lapidary) label "Doublet (lapidary)".
- Doublet_(lapidary) sameAs m.067v65.
- Doublet_(lapidary) sameAs Q5300152.
- Doublet_(lapidary) sameAs Q5300152.
- Doublet_(lapidary) sameAs Doublet_(lapidary).
- Doublet_(lapidary) wasDerivedFrom Doublet_(lapidary)?oldid=527416498.
- Doublet_(lapidary) depiction Opal_doublet.jpg.
- Doublet_(lapidary) isPrimaryTopicOf Doublet_(lapidary).