Amethyst with Agate & Calcite in Basalt, Uruguay
7" x 4" x 4" / 2.9 lbs
Amethyst (SiO2) is a purple variety of quartz. The characteristic purple color is created when trace amounts of iron are irradiated (from the natural radiation in surrounding rock). Price is based upon three factors: weight, shape & color. This natural specimen has NOT been heat-treated, unlike artificially enhanced (Brazilian) amethyst; It was mined in the northern region of Uruguay’s Artigas Department, the premier source of fine quality amethyst.