( n. )
A nearly pellucid variety of feldspar, showing pearly or opaline reflections from within. It is used as a gem. The best specimens come from Ceylon.
( n. )
A nearly pellucid variety of feldspar, showing pearly or opaline reflections from within. It is used as a gem. The best specimens come from Ceylon.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012