This is a softer version of the uncurved version, with three soft points and curved sides. This straight edged trillion cut is usually used for accent gemstones, on either side of a main, larger stone of a ring. It is generally cut with a 1:14 length to width ratio with straight edges. The cut displays a very sharp brilliance or fire if the diamond is cut to the correct depth allowing good scintillation. Triangular Brilliant and Triangular Modified Brilliant are the generic terms used by GIA when referring to non-branded diamonds. Now that the trademark had been canceled, the term "Trillion Cut" is used to refer to all triangular-shaped gems, even step cut, and cabochon stones. Finker gave the term “trillion” to the trade in a half-page advertisement in the New York Times and announced that their Patented Cut would now be known as Trielle® and TRIELLE® in a stylized design. Since trilliant was a concatenation of the generic term “triangular brilliant,” it could no longer be a registered trademark. They used the term “Trillion” and “Trillion” in a stylized design until they lost the trademark in 1986 when a federal court judge decided that the words “Trillion” and “Trilliant” were phonetically equivalent. Finker's son, Marvin Finker, entered the business in the early 1970s, he decided to patent the cut that his father was cutting and he trademarked the term “Trillion®” for their now patented triangular brilliant cut diamond. Henry Meyer referred to his diamond cut as “ Trilliant,” while Mr. Finker had a large diamond cutting factory in New York, and Henry Meyer Diamond Company, who was also cutting triangular brilliant diamonds, used the same diamond cutters, though their stones were cut slightly differently. In the early 1960s Leon Finker created his version on the "triangular brilliant cut diamond" which he called the Trillion Cut. ![]() The trilliant cut was introduced by the Asscher brothers in Amsterdam.
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