Imperial A popular British system of units first defined in the Weights and Measures Act of 1824. For weights, troy ounces are used for pre...
Monday, 24 September 2012
Glossary of Terms - H
Hallmark A hallmark is a series of marks struck by an Assay office onto precious metal items to indicate origin and purity. Hyfin A brand na...
Glossary of Terms - G
Gauge A system to measure the thickness of metal wire or sheet. Many different gauges are in use, so care must be taken to understand which ...
Glossary of Terms - F
Facet A flat surface on a cut gemstone, these are cut in order to increase the reflected light. Ferrous A term used to indicate the presence...
Sunday, 23 September 2012
Glossary of Terms - E
Electroplating A plating process in which metal in a solution is moved by an electric current to cover a piece of metal acting as an electro...
Glossary of Terms - D
Dapping block See Doming block Die A tool used to shape or cut metal using a press. Dividers A pair of callipers with sharpened points that ...
Glossary of Terms - C
Cabochon A stone with a convex top and flat bottom. Cabochon shapes are usually used for opaque stones, or softer stones that would easily s...
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