Inside the Universes

[crystal.n.01] as in: a solid formed by the solidification of a chemical and having a highly regular atomic structure

[crystal.n.02] as in: a crystalline element used as a component in various electronic devices

[crystal.n.03] as in: a rock formed by the solidification of a substance; has regularly repeating internal structure; external plane faces

[quartz_glass.n.01] as in: colorless glass made of almost pure silica

[crystal.n.05] as in: glassware made of quartz

[crystal.n.06] as in: a protective cover that protects the face of a watch