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One step instead of two
Ring Width: 3 mm
78 78 Alluvial Mining 81 Marine Mining 82 Open-Pit Mining 86 Underground Mining 92 Diamond Sorting Chapter 4: The Evolution of Diamond Cutting
A stable painted base with a 100 mm diameter ensures secure placement on the workbench
Testing Solutions - Bottle 20ml ( shipping only available in Europe) Code:14ct One step instead of twoHow to use: 1)Rasp the metal piece on the surface to distinguish plating from solid gold. 2) Rub the metal on the filed area against the touchstone. The downstroke is supposed to be sharp and clear. 3) Apply the testing solutions to the downstroke. Start with the acid for 8ct and go up to 18 or 21,6ct: Acid 8 carat affect metals under 8 carat Acid 14 carat affect metals under 14 carat Acid 18 carat affect metals under 18 carat,etc. If the metal will
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US$ 740.00
US$ 1024.50