Rare Pink UV-Reactive Calcite on Lavender Purple Amethyst ClusterAmethyst for Collectors with Intact UV Reactive Calcite A small but gorgeous amethyst cluster, this deep purple specimen showcases a rarely seen formation of UV reactive calcite arranged as a geological landscape, with tall, intact calcite growing among lavender amethyst. When exposed to UV light, this calcite cluster glows in a beautiful intense pink huean eye catching feature that makes it an exceptional piece for your desk dcor, altar, or crystal