Ideal Cut

The Ideal Brilliant Cut: Its Beginnings to Today


Since its beginnings in the early 20th century to the present day, confusion and misunderstanding has frequently surrounded the use (or misuse) of the term “Ideal Round Brilliant Cut,” its defining properties and origin. Some have advocated eliminating its use altogether. Through the examination of the Ideal Round Brilliant Cut’s evolution, this article endeavors to clear up its history, clarify its defining properties and in the process dispel the misunderstanding and mythology surrounding this most popular and important of diamond cuts.

Whether cut with the smaller table, larger pavilion main and shorter half facets of the early Ideal (Morse’s American Cut), or fashioned with the larger table, slimmer mains and longer halves of today’s Ideal, the images, Figures 20, 21, 24, 25 and 31 in this work ( Click here for full article (PDF) ) reveal the superior light performance of fire and brilliance that characterize the Ideal Brilliant Cut.

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Michael Cowing