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Cut

Cut refers to the angles & proportions of the diamond.

It is the most important factor relating to the diamonds brilliance or sparkle. 

As cut has the smallest impact on price of the 4 c’s, it is worthwhile to consider cut in your final decision.

A well cut diamond will sparkle and have more life & sparkle (otherwise referred to as brilliance)  than one which is poorly cut.

Diamond Proportions - All of these measurements and angles make up the overall cut of the diamond

Description: Ideal Cut Round Diamond

There are standards of cutting to produce the optimum of brilliance (light reflecting from the table) and dispersion (light refracting from the crown). Originally designed by mathematician Marcel Tolkowsky in 1919, his design became one standard for the modern brilliant cut today. In cutting to these proportions, a cutter must often be willing to sacrifice much more of the valuable rough to yield a diamond of superior beauty but of far smaller size.

Most diamonds are cut for weight retention, which often results in a deviation from "good proportions". Often, the Diamond Cutter will sacrifice some of the beauty of the stone by cutting for a minimum of weight loss from the rough, which usually deviates from ideal proportions, but gets a larger finished stone. The truth is that less than 5% of all diamonds are cut to ideal proportions.

Care must be taken to avoid buying a stone that has been cut too far from the "excellent" proportions. When a stone has either a very shallow or very deep cut, light is lost through the sides and bottom of the stone (pavilion), reducing its brilliance. Cutting a stone that has "very good to good" cut or proportions usually results in a smaller carat weight stone.

Description: Diamond Cut Diagrams

Our diamond and engagement ring experts will guide you to the well cut diamonds for extra brilliance, sparkle and life in your stone.