The world's largest red diamond is known as the Red Shield, and weighs only 5.11 carats, compared with over 600 carats for the largest cut diamond of any kind.
Whoa, the biggest stone I've ever set was a 8 ct., and that was a monster. themercurius.com https://www.bkgjewelry.com/ruby-rings/237-18k-yellow-gold-diamond-ruby-solitaire-ring.html Archduke Joseph diamond
Side view of the Archduke Joseph Diamond, 76 cts. This cushion-cut diamond once set the world record at auction for a colorless diamond.
Star of Africa, the world's largest flawless cut diamond. It is a whopping 530 carats!