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Diamond proportions and facets, for the round brilliant cut. The original round brilliant-cut was developed by Marcel Tolkowsky in 1919. The ideal proportions are 100% diameter, 53% table, 43.1% pavilion and 16.2% crown. The girdle and culet (if any—not part of Tolkowsky's original design) are cut from the ideal brilliant.
The Round Brilliant cut diamond started the now universal trend of wearing diamond engagement rings to symbolize love and commitment. This versatile, round shape has timeless appeal and undeniable ...
1.13-carat (226 mg) round diamond engagement ring. The origin of the custom to use diamonds in rings, and more recently, in engagement rings, can be traced back to the Middle Ages and even the Romans. The Romans valued the diamond entirely on account of the supernatural powers they ascribed to it.
These diamond saws and good jewelry lathes enabled the development of modern diamond cutting and diamond cuts, chief among them the round brilliant cut. In 1919, Marcel Tolkowsky analyzed this cut: his calculations took both brilliance (the amount of white light reflected) and fire into consideration, creating a delicate balance between the two ...
For a more fashion-forward piece, this diamond ring includes a thick 18k yellow gold band with a “floating” ring of baguette-cut diamonds above it. $1,990 at Brilliant Earth Shane Co.
Bruting is the art of cutting a diamond to make the girdle round. In the modern era diamonds are rounded using either a laser, a diamond disk impregnated with diamonds, or spinning two diamonds so they cut against each other. Industrial diamonds can also be used for bruting a diamond round.