For the Bonnie Tyler album, see Diamond Cut (Bonnie Tyler album).
Type of cut used when shaping a diamond
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Diagram of old diamond cuts showing their evolution from the most primitive (point cut) to the most advanced pre-Tolkowsky cut (old European). The rose cut is omitted, but it could be considered intermediate between the old single and Mazarin cuts.
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A diamond cut is a style or design guide used when shaping a diamond for polishing such as the brilliant cut. Cut refers to shape (pear, oval), and also the symmetry, proportioning and polish of a diamond. The cut of a diamond greatly affects a diamond's brilliance—a poorly-cut diamond is less luminous.
In order to best use a diamond gemstone's material properties, a number of different diamond cuts have been developed. A diamond cut constitutes a more or less symmetrical arrangement of facets, which together modify the shape and appearance of a diamond crystal. Diamond cutters must consider several factors, such as the shape and size of the crystal, when choosing a cut. The practical history of diamond cuts can be traced back to the Middle Ages, while their theoretical basis was not developed until the turn of the 20th century. Design, creation and innovation continue to the present day: new technology—notably laser cutting and computer-aided design—has enabled the development of cuts whose complexity, optical performance, and waste reduction were hitherto unthinkable.
The most popular of diamond cuts is the modern round brilliant, whose 57 facets arrangements and proportions have been perfected by both mathematical and empirical analysis. Also popular are the fancy cuts, which come in a variety of shapes, many of which were derived from the round brilliant. A diamond's cut is evaluated by trained graders, with higher grades given to stones whose symmetry and proportions most closely match the particular "ideal" used as a benchmark. The strictest standards are applied to the round brilliant; although its facet count is invariable, its proportions are not. Different countries base their cut grading on different ideals: one may speak of the American Standard or the Scandinavian Standard (Scan. D.N.), to give but two examples.
of a diamond. The cut of a diamond greatly affects a diamond's brilliance—a poorly-cutdiamond is less luminous. In order to best use a diamond gemstone's...
guild of diamond cutters and polishers (Diamantaire) was formed in 1375 in Nuremberg, Germany, and led to the development of various types of "cut". This...
The princess cut (technical name 'square modified brilliant') is a diamondcut shape often used in engagement rings. The name dates back to the 1960s...
Diamond is a solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic. Another solid form of carbon known...
by Edward VII, and at 530.4 carats (106.08 g) it is the largest clear cutdiamond in the world. The stone is mounted in the head of the Sovereign's Sceptre...
accurate description would be a cut cornered square emerald cutdiamond. Also known as square emerald cuts, Asscher cutdiamonds are roughly square in shape...
a larger 89 carat diamond in the 15th century in India. Found in Golconda mines of Kollur and originally cut in India, the diamond was the adornment in...
A diamond simulant, diamond imitation or imitation diamond is an object or material with gemological characteristics similar to those of a diamond. Simulants...
XIV of France in 1668. It was stolen in 1792 and re-cut, with the largest section of the diamond appearing under the Hope name in an 1839 gem catalogue...
moderate dispersion (0.044) properties that give cutdiamonds their brilliance. Scientists classify diamonds into four main types according to the nature...
DiamondCut Productions is an American company founded by Craig Maier and Rick Carlson in 1986 with the aim of preserving many of the original test pressing...
Jewelry and diamond historian Herbert Tillander refers to this as a "stellar brilliant cut", and lists the gem in his book, DiamondCuts in Historic Jewelry...
million copies. Ronnie Scott and Steve Wolfe produced Tyler's third album, DiamondCut, with Robin Geoffrey Cable. Released in February 1979, it was a Top 20...
The Portuguese Diamond is a large octagonal-cutdiamond known for its flawlessness and clarity. It weighs 127.01 carats (25.402 g). Under ultraviolet light...
Jubilee Diamond". diamondsinstyle.com. Retrieved 21 May 2013. DeMarco, Anthony (10 April 2019). "Graff Unveils World's Largest Square Emerald CutDiamond at...
The Golden Jubilee Diamond, a 545.67 carat (109.13 g) brown diamond, is the largest cut and faceted diamond in the world. It outweighs the Cullinan I by...
that 98% of industrial-grade diamond demand is supplied with synthetic diamonds. Both CVD and HPHT diamonds can be cut into gems and various colors can...
Hearts and arrows (H&A) diamonds are precision-cut variations of the traditional 57 faceted round brilliant cut. They are cut to "ideal" proportions with...
trillion cut. Finker had a large diamond cutting factory in New York, and Henry Meyer Diamond Company, who was also cutting triangular brilliant diamonds, used...
rough diamond of gem quality ever found. It was ultimately cut into ten stones weighing from 13 to 68 carats (2.6 to 13.6 g). The Excelsior Diamond was...
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