This Specimen has been sold.
1.1" Beautiful Chrome-Dravite Crystal - Tanzania
This is a beautiful chrome-dravite crystal that was collected from the Landanai Hills of Tanzania. This gorgeous tourmaline variety earns its rich green coloration from chromium ions. Comes with an acrylic display case.
Dravite, also known as "brown tourmaline," is composed of sodium, magnesium, aluminum, and boro-silicate, with the chemical formula of NaMg3Al6(BO3)3Si6O18(OH)3F. Dravite is a subclass of tourmaline, which along with schorl tourmaline and uvite (also subclasses of tourmaline), form into a prismatic/columnar formation.