The round brilliant cut diamond is an example of pure excellence. The outline has been used as a symbol of perfect proportions. What makes it so perfect is its round shape. Creating a round diamonds allows the cutter to focus on basic principles of light reflection and refraction. As simple as the principles may be, the creation of a brilliant gem is far from simple. Before World War II the round brilliant was cut most by hand and aligning the diamond by sight. Today, we use digital and laser technology to aid the cutter to maximize brilliance. Diamonds were never as brilliant as they were in the latter half of the twentieth century. Thanks to the precision of cut the 4Cs are complete and cut is the main reason why any diamond sparkles. If the diamond is cut too shallow or too deep, the diamond will lose light through the side or the bottom of the diamond. When it is cut proportionately, the diamond will sparkle with an almost magical quality that captures the eye. Today, round diamonds are graded from Excellent, Very Good, Good, Fair to Poor. The differences may be noticeable to many, but diamonds given a good cut are still very brilliant.
The round brilliant is a beautiful shape diamond and has preferred proportions for specific carat weights. A round diamond measuring 6.30 to 6.50mm across should weigh approximately 1 carat. A diamond that measures 8.00 to 8.20mm should weigh approximately 2cts. If the diamond weighs significantly less than 2cts, the diamond will be a shallow cut and less brilliant.
The round diamonds is probably the most popular of the diamond shapes cut today. In Dallas we see the round cut diamonds annually out sell all the other shapes anywhere from 3 to 1 or 2 to 1. Round diamonds is more expensive than the other shapes for a couple reasons. Firstly, the round is more brilliant than the other shapes creating a larger demand. The second reason is when a round diamond is cut, its yield is the lowest of the other shapes. There is more diamond that is cut away and not used for that diamond than other shapes. If it was not for the precision and care that was given to the round brilliant cut diamond none of the other shapes would have improved in their brilliance. Most of the fancy shapes are called brilliant in their name and it refers to the type of cut it was given, patterned after the round brilliant. The round brilliant cut is the most sought after for antique jewelry. Custom designing an engagement ring from the past is usually set with a round brilliant.
The Round diamonds Dallas has specific mathematical proportions that will maximize the diamonds ability to produce fire, brilliance, and sparkle. And yet, the evolution of the round diamond has come to a point where retailers will market their own round diamond specialty cut. These round diamonds may be beautiful but the retailers are still carrying the traditional round brilliant in their inventory, and it will still out sell their specialty cut. Most of these special cut round diamonds have additional facets that will break up the light into smaller pieces. This does not, necessarily make the diamond more brilliant. Today's Round Diamonds is perfect the way it is.