Rock Crystal or rock crystal is:
- the name sometimes given to a variety of quartz
- a short novel Rock Crystal (novella) (1845) by Austrian writer Adalbert Stifter
(1805–1868)
- a 19th-century French objet d'art, the Rock Crystal (Fabergé egg)
- a type of decorative vase, rock crystal vase
- a ewer typical of Fatimid art
- one of a number of gemstones used for hardstone carving
