A gemstone desired to be used in jewelry is cut depending on the size and shape of the rough stone, as well as the desired piece ...
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of jewelry to be made. As a general rule, a cut gemstone will reduce the mass (in carats) by about 50%.
Among the several techniques used to work with gemstones are sawing, grinding, sanding, lapping, polishing, grilling, and tumbling. The diamond cut planning stage is a complex process that requires the cutter to work with unique rough stones. Very often, the location of the inclusions in a rough stone will determine the type of shape to which a diamond may be cut. For economic reasons, most diamonds are cut to retain weight instead of maximizing brilliance.
