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Glossary of watchmaking

Emerald

Émeraude | エメラルド | 翡翠

Emerald

The saturated green variety of the Beryl family. Its colour is due to minute traces of chromium or sometimes vanadium. Inclusions in emerald are called jardins from the French word for garden. Emeralds have a hardness of 7-8 and a specific gravity of 2.6 - 2.8.