Exploring Jewelry Definitions – Assay

Gold Assay

Assay

A chemical spot test that can help identify the approximate composition of a gold or silver alloy.

A benchmark is used to obtain a very small sample of the metal through abrasion, which is subsequently exposed to different types of acids.

The disintegration of the streak on the benchmark by a given acid indicates the approximate chemical composition, for example, 14 karat versus 18 karat gold.

Gold Assay
Gold Assay

Published by Peter Lopez

Peter is a lifelong student of art with a particular passion for jewelry, vintage European cars, movies, books, and history.

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