- A Good to Very Good cut provides the most economical round cut.
- A length/width ratio of 0.95 - 1.05 might be a little less expensive but still looks great.
Round Cut Diamonds: The Most Popular Diamond Cut.
The most popular and widely researched diamond shape available now is the round brilliant cut diamond. Optimization of the fire and brilliance in a round diamond is achieved by advanced theories of light behavior and precise mathematical calculations practiced for nearly 100 years now. The round diamond also gives you more flexibility in terms of balancing cut, color and clarity grades without compromising the fire and brilliance you are looking for.
The ideal proportions for a round cut diamond would fall into this range: