Ametrine | Bolivia yellow It occurs in association with

It occurs in association with crandallite and variscite in hydrothermal regions and in phosphate rock deposits

Smoky Quartz with hematite inclusions

naturally occurring variety of quartz that features a unique bi-colored blend of purple amethyst and yellow citrine in one single stone

a spiderweb stromatolite above and a planer stromatolite below

Ametrine | Bolivia yellow It occurs in association withAmetrine is a rare, naturally occurring variety of quartz that features a unique bi colored blend of purple amethyst and yellow citrine in one single stone. Sourced in Bolivia, it forms through the differential oxidation of iron within the crystal. This item is 3 x 2 and weighs 4. 2 oz.