Glossy longitudinally striated aggregate of transparent intensely blue Tourmaline crystals, known as indigolite. The sample is terminated on one side by crystal faces, and on the other side is partly terminated by a crystal face and partly by an irregular contact with the original substrate. A smaller crystal grown on the side has a black termination known as a “Schorl” cap. A beautiful aggregate of crystals demonstrating the rare blue color of Tourmaline from the Kunar region in Afghanistan.
