5x4mm Octagon Cut Tourmaline microscopes Working temperature range: 10°C~30°C

Working temperature range: 10°C~30°C

Pointed one end with 4mm flat at other end

Ema 107 6476

Includes plastic stand for when microscope not in use

5x4mm Octagon Cut Tourmaline microscopes Working temperature range: 10°C~30°CTourmalines 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