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High quality doming punch steel set of 12 on wooden stand
Spare blade for G44144
19 * 13 * 2
Need to measure the refractive index of jewellery
1.19ct Octagon Cut Sapphire 5.8x5.5mm Bergeon 2820 Ø44mm Capacity High quality doming punch steelSapphire 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