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Glossary of watchmaking

Labradorite

Labradorite | ラブラドライト | 拉长石

Labradorite

A variety of plagioclase feldspar that has a greyish background with flashes of colour called labradorescence. It is used as watch dials. Labradorite has a hardness of 6 to 6.5 and a specific gravity of 2.70. Finnish labradorite is also known as spectrolite.