An assembled gem (also called a composite gem) is a gemstone made up of other smaller gems. An assembled gem can often be a fake gem with a desirable piece of gemstone attached to pieces of inexpensive imitation gemstones. For example, a combination of a thin layer of green glass and a colorless piece of

quartz Quartz is a hard, crystalline mineral composed of silica ( silicon dioxide). The atoms are linked in a continuous framework of SiO4 silicon-oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical ...

would be a composite gem.

Types

A doublet is a type of assembled gem which is composed of two parts. A ''false doublet'' is a doublet which is a

glass Glass is a non-crystalline, often transparent, amorphous solid that has widespread practical, technological, and decorative use in, for example, window panes, tableware, and optics. Glass is most often formed by rapid cooling ( quenching ...

piece that looks like a real gem and a real gem that have been attached to look like a larger gem. A triplet is a type of assembled gem composed of three distinct parts.

References

Gemstones {{mineral-stub