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Lydite

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Translation of "lydite" into Russian

lydite
Noun
raiting
lydite
lydites pl
лидит
Lydite is a type of siliceous rock.
Лидит - это тип кремнистой породы.

Definitions

lydite
Noun
raiting
A type of hard, fine-grained, black or dark-colored siliceous rock, often used as a touchstone for testing the purity of gold.
The jeweler used a piece of lydite to test the authenticity of the gold necklace.