Quartz var. Amethyst cast after Calcite, Artigas, Uruguay, Mined c. 1990s, Miniature 2.4 x 4.0 x 4.5 cm, $45. Online 6/5.
Rich purple shell of amethyst with vitreous luster formed as a cast after and over calcite. Nicely zoned with light gray centers and intense purple tips. Mined c. 1990s and in great condition with only some trivial edge rubs.