Large dravite tourmaline from our collection of crystals rocks and minerals. Dravite is a brown variety of the mineral tourmaline that's rich in sodium and magnesium. When exposed to heat its distinctive colour becomes lighter. Despite dravite not being particularly rare, its a mineral that's often overlooked because it's not particularly colourful and the formations in which it occurs can be fairly uninteresting.
Dravite tourmaline was first documented in a book on mineralogy written by an Austrian professor in 1884 and was named after the Drava river in Austria and Slovenia. This variety of brown tourmaline can exhibit impressive crystallisation but it's very rarely used as a gemstone.
This large and chunky piece of dravite is well included with silvery specs of mica which can be seen on the surface of the mineral. It has a vitreous lustre so reflects light as opposed to absorbing it.