Specification: Rate precision: +/- 0
Material: polycarbonate lenses
Sleek ergonomic shape comfortably rests in and on your hand when held
Beat error measurement: 0 to 4ms (+ / - 0
Package Weight: 88g / 3
6.60ct Oval Cabochon Tourmaline 16.6x10.5mm Richard Mille Case & Movement Screwdriver; dynagem Swiss Style Specification: Rate precision: +/- 0Tourmalines 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