7.13ct Rectangular Cut Tourmaline 22.6x6.3mm Diamond Grading Case Application: Drill Oblique Holes

Application: Drill Oblique Holes

All punches and stakes are fitted in a numbered gilded metal plate

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

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

7.13ct Rectangular Cut Tourmaline 22.6x6.3mm Diamond Grading Case Application: Drill Oblique HolesTourmalines 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