HomeFactopediaBrainoffsRankingsCommunityLog In
You know 0 facts


Play Fact Master on Gemstones - Colours  (it's free)    

   is coloured   
A crystalline mineral (Calcium boron silicate) similar to topaz. It is usually colourless, like quartz, but can be also either pale yellow, yellowish-brown, or pink. It has a relatively new history compared to other gemstones, having only been discovered in 1839. It has become popular as a substitute for stones like topaz. It is a relatively hard crystal and can be polished to produce a brilliant finish.

   About - Terms - Privacy Log In