CACHOLONG

Etymology

Noun

cacholong (plural cacholongs)

(mineral) An opaque or milk-white chalcedony, a variety of quartz.

(mineral) A similar variety of opal.

Source: Wiktionary

Cach"o*long, n, Etym: [F. cacholong, said to be from Cach, the name of a river in Bucharia + cholon, a Calmuck word for stone; or fr. a Calmuck word meaning "beautiful stone"] (Min.)

Definition: An opaque or milk-white chalcedony, a variety of quartz; also, a similar variety of opal.

Source: Webster’s Unabridged Dictionary 1913 Edition