15.41ct Octagon Cut Tourmaline 25x10.5mm Wax Designing Ring Mandrel Kit Pearl & Stone (Thickness) Gauge

Pearl & Stone (Thickness) Gauge

Range 7 to 24mm

Clamp On Vice

Set of 4 blades

15.41ct Octagon Cut Tourmaline 25x10.5mm Wax Designing Ring Mandrel Kit Pearl & Stone (Thickness) GaugeTourmalines are found in a wide range of colours, pink, green, blue, orange, yellow, brown, black, and colourless. Bi coloured Tourmalines are also common and stones which are coloured pink to green are known as watermelon tourmaline. Tourmalines can also display cat's eye chatoyancy, which is caused by parallel fibres running through the stone.; Tourmaline is found in many countries including Madagascar, Brazil, USA, Burma, Sri Lanka, Botswana and