RKL10 Quartz var. Ametrine 

Anahi Mine, sandoval Prov., Santa Cruz Dept., Bolivia

7.8x 3.7x 2.5 cm

$345

Ex. Robert Nowakowski

These Bolivian ametrine specimens have always intrigued me. This is an etched prism (they are always etched) of gemmy ametrine, complete with terminations.

When held up to the light, the orange and purple regions that give ametrine its name [amethyst +  citrine ]are clearly visible.

This is from the same area known for producing the massive amethyst clusters that we are all familiar with.  This mine is located in the Amazonian east of the country-- the vast majority of Bolivian specimens (the sulfosalts, sulfides, phosphophyllites, etc.) come from the mountainous west.  As a side note, gas rich Santa Cruz is also the center of a recent secessionist movement in Bolivia.