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  2. Asprey - Wikipedia

    en.wikipedia.org/wiki/Asprey

    The result was the 61-facet Asprey cut, maximising light refraction to brilliant effect. Carat weights of Asprey-cut diamonds range from 0.50 to 3. Asprey-cut diamonds are inscribed on one side of the cushion with the GIA certificate number and with four distinctive 'A's on the other. It is also the only diamond that has the letter "A" on the ...

  3. 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.

  4. De Beers - Wikipedia

    en.wikipedia.org/wiki/De_Beers

    De Beers Diamond Jewellers (DBDJ) was established in 2001 as a 50:50 joint venture between The De Beers Group of Companies and LVMH, the French luxury goods company. [81] The first De Beers boutique opened in 2002 on London's Old Bond Street as the brand's flagship store. Since then, stores have opened in various cities around the world.

  5. Graff (jewellers) - Wikipedia

    en.wikipedia.org/wiki/Graff_(jewellers)

    The stone was cut by a team of 35 using computer-controlled lasers into 26 D-flawless diamonds totaling 223.35 carats (44.670 g), the highest yield from a single diamond. [ 17 ] [ 18 ] The Wittelsbach-Graff Diamond is a 31.06-carat (6.212 g) fancy deep-blue diamond with internally flawless clarity purchased by Laurence Graff in 2008 for £16.4 ...

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  7. Koh-i-Noor: The History of the World's Most Infamous Diamond

    en.wikipedia.org/wiki/Koh-i-Noor:_The_History_of...

    The First Cut. The chapter describes scientific and professional examination of the Koh-i-Noor and how it was cut. There is a summary of David Brewster's critique of the diamond. Garrard & Co contracted the Dutch diamond company Mozes Coster to plan for cutting the diamond. Maudslay, Sons & Field provided an engine to grind it.

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