Golden Yellow Calcite on Deep Purple Amethyst ClusterGolden Calcite Specimen Product Details A supremely glassy and lustrous Golden Yellow Calcite crystal takes center stage in this natural amethyst cluster specimen, growing harmoniously atop a base of deep purple Amethyst druzy. Typically, golden calcites are not found on high grade amethyst clusters, but in this extraordinary piece, the vibrant calcite formation contrasts beautifully with the rich violet amethyst, creating a natural crystal artwork