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2. Diamond cut - Wikipedia

   en.wikipedia.org/wiki/Diamond_cut

   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.

3. Diamond cutting - Wikipedia

   en.wikipedia.org/wiki/Diamond_cutting

   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.

4. Cut (gems) - Wikipedia

   en.wikipedia.org/wiki/Cut_(gems)

   The diamond cut planning stage is a complex process that requires the cutter to work with unique rough stones. Very often, the location of the inclusions in a rough stone will determine the type of shape to which a diamond may be cut. For economic reasons, most diamonds are cut to retain weight instead of maximizing brilliance. [2]

5. Brilliant (diamond cut) - Wikipedia

   en.wikipedia.org/wiki/Brilliant_(diamond_cut)

   These stones (such as EightStar-brand diamonds) have less light leakage at the edge of the stone (for a given crown angle, pavilion angle, and table ratio). Some diamonds with painted girdles receive lower grades in the GIA's cut grading system, for reasons given in a 2005 GIA article. [4] Several groups have developed diamond cut grading ...

6. Royal Asscher Diamond Company - Wikipedia

   en.wikipedia.org/wiki/Royal_Asscher_Diamond_Company

   The original design had 58 step-cut facets, a small table, high crown and steep pavilion with cut corners. An accurate description would be a cut cornered square emerald cut diamond. Also known as square emerald cuts, Asscher cut diamonds are roughly square in shape when viewed from above but have cut corners for more light to enter the diamond.

7. List of diamonds - Wikipedia

   en.wikipedia.org/wiki/List_of_diamonds

   When discovered in 1905 the 3106.75 carat (621.35 g) Cullinan was the largest rough gem-quality diamond ever found. It was cut into 105 diamonds including the Cullinan I or the Great Star of Africa, 530.2 carats (106.04 g), and the Cullinan II or the Second Star of Africa, 317.4 carats (63.48 g), both of which are now part of the British Crown ...