rock crystal

noun

1. transparent quartz, especially when colorless.

rock crystal

noun

1. a pure transparent colourless quartz, used in electronic and optical equipment. Formula: SiO 2

Word History and Origins

Origin of rock crystal¹

First recorded in 1660–70

Example Sentences

There was a little table at hand; on it stood a rock-crystal goblet and a silver cooler filled with snow-water and rose sherbet.

From Project Gutenberg

Blanik is the name of a mountain in Bohemia, beneath which are lofty halls whose walls are entirely fashioned of rock-crystal.

From Project Gutenberg

It abounds in most substances which are hard enough to strike fire with steel, as flint, rock crystal, and most precious stones.

From Project Gutenberg

Its transparency is scarcely less than that of water or of Rock Crystal, and devoid of colour.

From Project Gutenberg

Rock Crystal grows ordinarily in hexagonal bars, and diamonds are found which occur with a square point and polished surfaces.

From Project Gutenberg