Rare Large AAA Amethyst Cluster with Calcite and CristobaliteWorld Class Amethyst Cluster with AAA, X Large Amethyst Druzy and Cristobalite, Calcite and Sugar Coat Inclusions A X Large Amethyst Cluster which is worth a top spot at any world class gallery, this deep, dark purple amethyst brings an array of rarely seen characteristics on an aesthetically pleasing amethyst specimen. (Disclaimer, this is possibly the best Amethyst Cluster here) Starting with the The Druzy color, the Amethyst brings a Deep and Dark