Crystal f
English: 19th-century coinage. This is one of the group of names taken from or suggestive of gemstones. The word crystal, denoting high-quality cut glass, is derived from Greek krystallos ice. (As a male name, Crystal originated as a Scottish pet form of CHRISTOPHER (SEE Christopher), but it is hardly, if ever, used today.)
Variant: Krystle.
First names dictionary. 2012.