3.13ct Octagon Cut Sapphire 9x7.4mm 12 litre "Rota Barrel" Variable Speed More power during operation

More power during operation

Item size: 150 * 65mm / 5

Double Flange

notched or with holes

Great for all types of detail work in both hard and delicate materials

3.13ct Octagon Cut Sapphire 9x7.4mm 12 litre "Rota Barrel" Variable Speed More power during operationSapphire is a variety of the mineral corundum, an aluminium oxide. It is typically blue but fancy coloured sapphires also occur in orange, yellow, green, brown, purple, pink, black and colourless. Red and reddish pink coloured corundum is referred to as ruby. The variety in colours is due to trace amounts of elements such as iron, titanium, chromium, copper and magnesium. Mohs Scale of Hardness: 9 (out of 10). Sources: Mines that have yielded the