SynonymDefinitionAntonym.com - English Synonym Dictionary

A protective cover that protects the face of a watch

Glassware made of quartz

A crystalline element used as a component in various electronic devices

A rock formed by the solidification of a substance; has regularly repeating internal structure; external plane faces

A solid formed by the solidification of a chemical and having a highly regular atomic structure

Colorless glass made of almost pure silica