MINERAL GEM WORLD

AMETRINE ROUGH

This is  a natural untreated rough crystal of ametrine rough from Bolivia .It has some stunning crystal formations making this a top collectos specimen.

Weight 1650  cts app.

Size  155X56X36  mm app

Ametrine, also known as trystine or by its trade name as bolivianite, is a naturally occurring variety of  quartz . It is a mixture of amethyst and  citrine  with zones of purple and yellow or orange. Almost all commercially available ametrine is mined Bolivia although there are deposits being exploited in Brazil and India

The colour of the zones visible within ametrine is due to differing oxidation states iron within the crystal. The different oxidation states occur due to there being a temperature gradient across the crystal during its formation.