An assembled gem (also called a composite gem) is a
gemstone
A gemstone (also called a fine gem, jewel, precious stone, semiprecious stone, or simply gem) is a piece of mineral crystal which, when cut or polished, is used to make jewellery, jewelry or other adornments. Certain Rock (geology), rocks (such ...
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 Atom, atoms are linked in a continuous framework of SiO4 silicon–oxygen Tetrahedral molecular geometry, tetrahedra, with each oxygen being shared between two tet ...
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 an amorphous (non-crystalline solid, non-crystalline) solid. Because it is often transparency and translucency, transparent and chemically inert, glass has found widespread practical, technological, and decorative use in window pane ...
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
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