Aventurine

n. [Fr. aventurine, It. aventurino, N. Lat. aventurinus lapis, Ger. aventurinstein.] 1. (Min.) A variety of translucent quartz, spangled throughout with scales of yellow mica. Dana.

2Sense 2. Brownish glass similarly spangled with copper filings.

a. Spangled or sparkling with minute yellowish or reddish particles or scales disseminated through a mineral; as, aventurine quartz, aventurine feldspar. Dana.