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2. Cut (gems) - Wikipedia

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

   [1] Among the several techniques used to work with gemstones are sawing, grinding, sanding, lapping, polishing, grilling, and tumbling. 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 ...

3. Marcasite jewellery - Wikipedia

   en.wikipedia.org/wiki/Marcasite_jewellery

   Marcasite jewellery is jewellery made using cut and polished pieces of pyrite (fool's gold) as gemstone, and not, as the name suggests, from marcasite. [1] Both pyrite and marcasite are chemically iron sulfide, but differ in their crystal structures, giving them different physical properties. Pyrite is more stable and less brittle than marcasite.

4. Stonesetting - Wikipedia

   en.wikipedia.org/wiki/Stonesetting

   The earliest known technique of attaching stones to jewelry was bezel setting. A bezel is a strip of metal bent into the shape and size of the stone and then soldered to the piece of jewelry. The stone is then inserted into the bezel, and the metal edge of the bezel pressed over the edge of the stone, holding it in place.

5. Golconda diamonds - Wikipedia

   en.wikipedia.org/wiki/Golconda_diamonds

   The Heart of the Ocean, a blue diamond necklace in the film Titanic (1997), was designed by London-based jewellers Asprey & Garrard, who took inspiration from three diamonds of the French Crown Jewels known as The Regent, the Marie Antoinette Blue, and the Hope Diamond. [79] The pink, cushion-cut, 34.65-carat Princie Diamond used to be part of ...

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. 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 ...