Bolivian ametrine handmade sterling silver pendant necklace
This genuine 4.16 carat ametrine gemstone measures 10.3 x 9.45 mm
comes with black velvet gift box
virtually all the world's supply of ametrine comes from a single mine - the Anahi mine in southeastern Bolivia - ametrine continues to be a very affordable gem, though prices have been rising over the last decade.
Amethyst and citrine are both forms of quartz and are often found in the same location. But it is rare for both colors of quartz to be found in the same crystal. Both citrine and amethyst are colored by traces of iron, but the color of the zones visible within ametrine are due to differing oxidation states of iron within the crystal. The different oxidation states occur due to temperature differences across the crystal during its formation.