Fancy diamond shapes such as antique engagement ring, trilliant diamond, pear diamond, marquise, oval, and princess diamond are all designed to maximize the carat weight.
fancy diamonds is the hardest of all gemstones; it is the simplest in composition; it is ordinary carbon. Colossal heat and pressure, over the eons, crystallized the diamond jewelry into what it is today.
The first step in manufacturing Tiffany Style Diamond is to give them to a cleaver or sawyer. They both, essentially, perform the same task: That is to cut--or cleave--the diamond jewelry in two pieces in order to bring out the best profile that will determine the end product of the stones.