Gem Nation -- Glossary of Diamond, Jewelry and Watch Terms


Gem Nation -- Glossary of Diamond, Jewelry and Watch Terminology

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	Measurements The dimensions of a stone presented as either a range of values or a precise value. Measurements are shown in milimeters unless otherwise indicated.

	Mechanical Watch A watch movement that uses gears and levers driven by a hand-wound spring.

	Movement The assembly that comprises the main timekeeping mechanism of a wristwatch. The size, thickness and complexity of the movement, together with the number of jewels used as durable bearings, determine the movement's cost. Smaller and thinner movements tend to be more expensive than less compact movements.