Rock Crystal

Quartz

Quartz is a hard mineral composed of silica (silicon dioxide). Its atoms are linked in a continuous framework of SiO4 silicon–oxygen tetrahedra, with each oxygen atom being shared between two tetrahedra, giving an overall chemical formula of SiO2. Therefore, quartz is classified structurally as a framework silicate mineral and compositionally as an oxide mineral. Quartz is the second most common mineral or mineral group in Earth's lithosphere, comprising about 12% by mass.

Rock Crystal (Fabergé egg)

The Rock Crystal egg or Revolving Miniatures egg is an Imperial Fabergé egg, one in a series of fifty-two jeweled eggs made under the supervision of Peter Carl Fabergé for the Russian Imperial family. It was created in 1896 for Empress Alexandra Feodorovna. The egg currently resides in the Virginia Museum of Fine Arts.

Rock Crystal (novella)

Rock Crystal is a novella by Austrian writer Adalbert Stifter, about two children who become lost in a snowstorm in the Alps on Christmas Eve.

Crystal

A crystal or crystalline solid is a solid material whose constituents are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions. In addition, macroscopic single crystals are usually identifiable by their geometrical shape, consisting of flat faces with specific, characteristic orientations. The scientific study of crystals and crystal formation is known as crystallography. The process of crystal formation via mechanisms of crystal growth is called crystallization or solidification.

rock crystal

Noun

1. A clear, colorless form of the silica-based mineral quartz.