Unusual precious gemstones create unique designs. Like this one - a unique Nigerian tourmaline ring. The unusual origin of the stone and the unique green shade make it unique. The ring was handcrafted from 18 - carat gold in our Warsaw workshop in accordance with the best craftsmanship traditions. The tourmaline embedded in thering has a mass of 0.16 CT,has AAA transparency,round shape and brilliant-cut. Tourmalines are extremely scratch-resistant stones,on the ten-point Mohs hardness scale,they have the number 7,5. Side diamonds 0.009 CT/ 0.054 CT (1.25x1.25mm).