5.98ct Cushion Cut Tourmaline 18x8mm Elma Watch winders costins approximately only 50p to

costins approximately only 50p to 60p per square inch

Depending on the transparency of the stone which can be anything between transparent to semi-translucent

80 Micron (Grit 230

It may have veins and mottling of black and brown

black and colourless

5.98ct Cushion Cut Tourmaline 18x8mm Elma Watch winders costins approximately only 50p toTourmalines 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