Round Diamonds by Diamonds-USA.com

The most common brilliant cut is round. Round brilliant cut is the only one that has mathematical proof of their maximum "fire" reflection, which is known in the diamond trade as the "Round diamond Ideal Cut", or the "Ideal Cut".
Since man has first discovered the beauty of round diamonds, he has used these gems as a symbol of wealth and power. The largest and most rare diamonds have been noted throughout history and become famous diamonds. They have been owned by royalty, collectors and museums. One of the biggest famous round diamonds is the "Moon" a 183 carats white diamond.