A miniature sized GEM crystal of feldspar variety Sanidine. Sanidine by itself is a fairly common feldspar from volcanic environments, however, GEM Sanidine is RARE. And this piece is no exception: Translucent, a great yellow color, with a gemmy sparkle, and great prism faces with a vitreous luster. Have I mentioned the perfect termination? This is a rare and valuable specimen and can be yours for a fraction of what comparable pieces cost on the Internet. And I know it is tempting, but PLEASE don’t cut and facet this incredible gem.