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A scattering of "brilliant" cut diamonds shows off the many reflecting facets. A brilliant is a diamond or other gemstone cut in a particular form with 57-58 facets so as to have exceptional brilliance. The word 'brilliant' is also used for a diamond cut in this fashion.
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.
A 19th century tiara with blue sapphires and diamonds, cut in old European style. Of the hundreds of facet arrangements that have been used, the most famous is probably the round brilliant cut, used for diamond and many colored gemstones. This first early version of what would become the modern Brilliant Cut is said to have been devised by an ...
Brilliant-cut diamonds usually have 58 facets, but the Koh-i-Noor has 8 additional "star" facets around the culet, making a total of 66 facets. [2] The great loss of weight was to some extent due to removal of several flaws, one especially big, which Voorzanger discovered. [26]
An example of this is the marquise cut diamond which was popular in the 1970s to 1980s. In later decades, jewelers had little success in selling this shape in comparison to other shapes like the oval or pear shape. [citation needed] The marquise can be cut into an oval diamond by any diamond cutter with a loss of 5 to 10% in total weight.
Princess cut diamond set in a ring. The princess cut (technical name 'square modified brilliant') is a diamond cut shape often used in engagement rings. The name dates back to the 1960s, while the princess cut as it exists was created by Betazel Ambar, Ygal Perlman, and Israel Itzkowitz in 1980.
The result is a 74-facet step-cut square diamond. By adding facets on the outside of the diamond, the Royal Asscher Round Brilliant Cut removes some of the darker elements seen in a traditional round diamond, even an ideal cut. The effect is a crisp, clear centre, which though true to the round diamond shape is distinctively different with 74 ...
The facet pattern features eight needle-like facets pointing outward from the culet (bottom) facet. Jewelry and diamond historian Herbert Tillander refers to this as a "stellar brilliant cut", and lists the gem in his book, Diamond Cuts in Historic Jewelry – 1381 to 1910 (1995), among other such diamonds: the Cullinan Diamond, the Koh-i-Noor ...