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2. Cut (gems) - Wikipedia

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

   A gemstone desired to be used in jewelry is cut depending on the size and shape of the rough stone, as well as the desired piece of jewelry to be made. As a general rule, a cut gemstone will reduce the mass (in carats) by about 50%. [1] Among the several techniques used to work with gemstones are sawing, grinding, sanding, lapping, polishing ...

3. Star of the South - Wikipedia

   en.wikipedia.org/wiki/Star_of_the_South

   The diamond originally weighed 254.5 carats (50.90 g) and was cut into an oval cushion shape weighing 128.48 carats (25.696 g), losing almost half of its weight in the cutting process. The dimensions of the Star of the South were 35 mm x 29 mm x 19 mm. [4] The light reflected by the diamond is white, and the refracted light is of a rose tint.

4. Diamond (gemstone) - Wikipedia

   en.wikipedia.org/wiki/Diamond_(gemstone)

   Neither of these changes makes the diamond appear any larger, and both greatly reduce the sparkle of the diamond. (A poorly cut 1.0-carat (200 mg) diamond may have the same diameter and appear as large as a 0.85-carat (170 mg) diamond.) The depth percentage is the overall quickest indication of the quality of the cut of a round brilliant ...

5. Stonesetting - Wikipedia

   en.wikipedia.org/wiki/Stonesetting

   Prefabricated settings for stones, to be attached to jewelry. There are two general types of gemstone cutting: cabochon and facet. Cabochons are smooth, often domed, with flat backs. [1] Agates and turquoise are usually cut this way, but precious stones such as rubies, emeralds and sapphires may also be.

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. Tiffany Yellow Diamond - Wikipedia

   en.wikipedia.org/wiki/Tiffany_Yellow_Diamond

   The famous Hope Diamond is only 45.5 carats, which is about one-third the mass of the Tiffany Yellow Diamond. [5] The diamond is known to have been worn by only four women during its lifetime. It was worn by Mary Whitehouse at the 1957 Tiffany Ball held in Newport, Rhode Island, mounted for the occasion in a necklace of white diamonds. [5]