Lewis Short
capnĭas (noun M) = καπνίας: smoky.
* (Sc. οἶνος.) A kind of wine, Plin. 14, 3, 4, § 39.
* A precious stone of a smoky hue, of several varieties.
* A kind of jasper, Plin. 37, 9, 37, § 118 (called, id. 37, 10, 56, § 151, capnitis = καπνίτης).
* A kind of chrysolite; prob. our smoky topaz, Plin. 37, 9, 44, § 128.
Charlton T. Lewis, Charles Short, A Latin Dictionary