7.13ct Rectangular Cut Tourmaline 22.6x6.3mm Diamond Grading Case Accuracy: Up to 1% (detail

Accuracy: Up to 1% (detail on above table)

Illuminated chamber with toughened viewing screen

The sharpening stone is set into the wooden base allowing the easy fluctuation of the

Durston 1101

Application: Drill Oblique Holes

7.13ct Rectangular Cut Tourmaline 22.6x6.3mm Diamond Grading Case Accuracy: Up to 1% (detailTourmalines 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