20.81ct Octagon Cut Tourmaline 20x12mm Bergeon 2678 Winding Stem Oiler

20.81ct Octagon Cut Tourmaline 20x12mm Bergeon 2678 Winding Stem OilerTourmalines 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

Laser mode: up to 25 feet (about 7620mm)

Lens magnifications: 10X

Weight 135grams

Supplied with hand setting knob

High quality polycarbonate bi-aspheric lens

Inner Step Diameters: 100mm & 80mm

Price Per Carat: 70

the clip can also be rotated at 360 degrees

Measuring Range: -50~420°C/-58~788°F

Calibre 3035 & 3135

Carvable Purple was developed for designers and casters who often rework wax patterns

Shank Size: 38mm / 1