Multi-colored Tourmaline EarringsAlbite Elbaite, also known as Tourmaline is a group of mixed crystals with the following major members, Elbaite, Dravite, Schorl, Buergerite, Tsilaisite, and Uvite. Elbaite forms in igneous and metamorphic rocks and veins and have crystal that can be tinted by other minerals, thus allowing for a rainbow of colors to be formed. This sometimes allows for multi colored specimens (watermelon tourmaline) to sometimes form. What distinguishes tourmalines