crystal - noun

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

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

colorless glass made of almost pure silica

glassware made of quartz

a protective cover that protects the face of a watch

crystal - thesaurus

crystallization   lechatelierite   quartz