Ctw Diamond Chart. This is a millimeters to carat conversion chart for different shape diamonds. This is based on a length to width ratio of 1:1.
The surface area is 6.23×6.26mm. Round cut diamond size chart (mm) wondering what a 1 carat round diamond looks link on a hand? In our charts, the dimensions of a 1 carat heart shaped diamond is indicated as 6.50mm x 6.50mm.