Pronunciation: (u-ven'chu-rēn", -rin), [key]
1. an opaque, brown glass containing fine, gold-colored particles.
2. any of several varieties of minerals, esp. quartz or feldspar, spangled with bright particles of mica, hematite, or other minerals. Also,a•ven'tu•rin.Also called goldstone.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.