Which term refers to the following definition: Two separate pieces of material fused or cemented together to form a single assembled stone?

Which term refers to the following definition: Two separate pieces of material fused or cemented together to form a single assembled stone?

• A. Drift
• B. Doublet
• C. Dispersion
• D. Emplacement

Answer: (B)

A doublet is two separate pieces fused or cemented to form a single assembled stone. In practice, you have a thin top layer of gem material attached to a contrasting backing, creating the appearance of one gem. The join is achieved by cementing or light fusion, giving a single stone that combines the desirable color or optical qualities of the top layer with the stability of the base. This fits the definition exactly: two parts come together to look like one stone. Drift is not a gem-assembly term, dispersion describes how light fans into colors rather than how stones are put together, and emplacement is a geological term for magma placement rather than a gemstone construction.

A doublet is two separate pieces fused or cemented to form a single assembled stone. In practice, you have a thin top layer of gem material attached to a contrasting backing, creating the appearance of one gem. The join is achieved by cementing or light fusion, giving a single stone that combines the desirable color or optical qualities of the top layer with the stability of the base. This fits the definition exactly: two parts come together to look like one stone.

Drift is not a gem-assembly term, dispersion describes how light fans into colors rather than how stones are put together, and emplacement is a geological term for magma placement rather than a gemstone construction.