Tourmaline Ring, Raw Black Green Crystal Oblong, 925 Sterling Silver, s2Raw Tourmaline Crystal with the natural striations along the Crystal Length showing very clearly with nice sharply defined edges. At first sight this is a regular Black Tourmaline but looking closer you realise that it's not pitch black. Shine a torch or hold it up to the light and you find the magnificent Greens that we show in the Main Pic, there's also a patch of Blue Tourmaline. There's also a few Calcite Crystals. This is a lovely rugged crystal