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Before the discovery of the brilliant cut around 1910, most diamonds were cut in the so-called old-mine-cut. With the technology of the time and for an optimal use of material, most raw diamonds were cut close to an ochtahedron, the original eight-sided double pyramid form of the crystal. Most were in the shape of a pillow with the top being much higher and the round side much thicker than by the brilliant cut.
The culet was not crown-like, but instead a more or less large facette parallel to the pavilion. Old-mine-cut gemstones are less brilliant and appear a little darker than the modern brilliant, however the diamond’s strong surface shine is shown more to its advantage.
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