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2. Brilliant (diamond cut) - Wikipedia

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

   A brilliant is a diamond or other gemstone cut in a particular form with 57-58 facets so as to have exceptional brilliance. The underside is conical, a shape that provides maximal light return through the top of the diamond. Even with modern techniques, the cutting and polishing of a diamond crystal always results in a dramatic loss of weight ...

3. Jewels of Elizabeth II - Wikipedia

   en.wikipedia.org/wiki/Jewels_of_Elizabeth_II

   Contents. Jewels of Elizabeth II. Queen Elizabeth II wearing the Kokoshnik Tiara, diamond earrings, a diamond necklace and bracelet, and a silver watch to a state banquet for the President of Mexico in 2015. The larger necklace is the Grand Collar of the Order of the Aztec Eagle (awarded to her in 1973).

4. Jewels of Diana, Princess of Wales - Wikipedia

   en.wikipedia.org/wiki/Jewels_of_Diana,_Princess...

   It consisted of a Burmese sapphire and diamond pendant suspended on a baguette diamond tennis necklace (which also later suspended 'The Prince of Wales feathers diamond pendant'), matching earrings, matching ring, a two-row bracelet of brilliant-cut diamonds with a similar version of the sapphire pendant and a watch with the face set in the ...

5. 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. In order to best use a diamond gemstone ...

6. Diamond (gemstone) - Wikipedia

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

   The depth percentage is the overall quickest indication of the quality of the cut of a round brilliant. "Ideal" round brilliant diamonds should not have a depth percentage greater than 62.5%. Another quick indication is the overall diameter. Typically a round brilliant 1.0-carat (200 mg) diamond should have a diameter of about 6.5 mm (0.26 in).

7. Princess cut - Wikipedia

   en.wikipedia.org/wiki/Princess_cut

   The princess cut (technical name 'square modified brilliant') is a diamond cut shape often used in engagement rings. The name dates back to the 1960s, while the princess cut as it exists was created by Betazel Ambar, Ygal Perlman, and Israel Itzkowitz in 1980. The cut has a square or rectangular shape when viewed from above, and from the side ...