7.13ct Rectangular Cut Tourmaline 22.6x6.3mm Valjoux 7750 Series ETA Swiss 5 * 10 * 3

5 * 10 * 3

Size: 320 x 220 x 14mm

Bushing tool that allows the centring

Range 23 to 40mm

Zeiss D24 AR

7.13ct Rectangular Cut Tourmaline 22.6x6.3mm Valjoux 7750 Series ETA Swiss 5 * 10 * 3Tourmalines 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