My watch list  


Prase is a green translucent chalcedony (quartz). It gets its coloring from chlorite and hornblende and has been used for engravings since antiquity.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Prase". A list of authors is available in Wikipedia.
Your browser is not current. Microsoft Internet Explorer 6.0 does not support some functions on Chemie.DE