Old Single Cut:

Similar to the French cut, the single cut is one of the earliest variations of the table cut. The old single cut took a traditional table cut and sliced the four corners so that the number facets went from 5 to 9, on both the crown and the pavilion. These stones were typically more square than the traditional round single cut stones we are used to seeing today.

New Single Cut:

New Single cuts are round in shape, with a similar facet structure to the old single cut. They are based around an octagonal table with 9 crown facets including the table and 8 pavilion facets, coming to a point rather than having an open culet.

Of course, new single cuts were impossible to fashion before the invention of the bruting machine of the 19th century. By the 1920s, single cuts became the easiest to produce small round accent diamond cut. They are still used occasionally today, mainly in jewelry intended to be vintage inspired. More often than not, even really small round stones today will be full brilliant cut diamonds.

artistic depiction of a new (left) and old (right) single cut diamond
An Artistic Depiction of a New (Left) and Old (Right) Single Cut Diamond
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