The name of « Ametrine » comes from the contraction of amethyst
Indeed, this is the result of those two crystals’ fusion, both
obtained from quartz, with a yellow side (citrine) and a mauve to dark purple
side (amethyst). Its hardness is absolutely remarkable.
This stone is very rare, it is only present in mines that are
located in the east of Bolivia (although Brazilian people passed off the stone
as an exclusively Brazilian stone, hence the given name, not without a touch of
arrogance; the Bolivianite.