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2. The symbolism and meaning behind different engagement ring shapes

   www.aol.com/symbolism-meaning-behind-different...

   Different diamond shapes will affect the perceived size of the diamond. Diamonds with an elongated shape, like the Oval and Marquise, often appear larger than Round cut diamonds of the same carat ...

3. 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.

4. Diamond cutting - Wikipedia

   en.wikipedia.org/wiki/Diamond_cutting

   The weight retention analysis studies the diamond rough to find the best combination of finished stones as it relates to per carat value. For instance, a 2.20-carat (440 mg) octahedron may produce (i) either two half-carat (100 mg) diamonds whose combined value may be higher than that of (ii) a 0.80-carat (160 mg) diamond plus a 0.30-carat (60 ...

5. 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]

6. A Brief History of the Cullinan Diamonds, Queen Elizabeth's ...

   www.aol.com/brief-history-cullinan-diamonds...

   The 94.4-carat pear-shaped Cullinan III and the 63.6-carat square-cut Cullinan IV were originally set into Queen Mary's coronation crown (which also held the famous Koh-i-Noor diamond).

7. Brilliant (diamond cut) - Wikipedia

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

   The earliest diamond cutting techniques were simply to polish the natural shape of rough diamonds, often octahedral crystals. [1] Around the 1500s, polishing and cutting inventions made it possible to shape diamonds better, cut facets and make the stones sparkle more. [2] By 1750, a round cut called Old European cut had developed.