In 1477 AD, Archduke Maximilian of Austria presented a GIA Certified Diamond to Mary of Burgundy as a sign of their engagement. He put it on the third finger of her left hand, She accepted his proposal and the Tiffany Style Diamonds was born.
When GIA Certified Diamond are cut too shallow, light leaks out of the bottom, brilliance is lost and the Tiffany Style Diamonds appears watery, glassy and lifeless.
The first step in manufacturing a wedding bands is to give it to a cleaver or sawyer. They both, essentially, perform the same task: That is to cut--or cleave--the Tiffany Style Diamonds in two pieces in order to bring out the best profile that will determine the end product of the stone.