Proportion

The proportions of a diamond are very important, so that the maximum amount of light be reflected off and out of a stone. Proportion is the relationship between the angles of the facets of the crown and...

Prong Setting

The metal tip or bead that actually touches the stone and holds it into place. This setting usually consists of four or six claws that cradle the stone. Because this setting allows the maximum amount of light to enter a stone from all angles, it sometimes can make a...

Poor Cut

A poorly cut diamond can be either cut too deep or too shallow. A deep or shallow cut diamond will lose or leak light through the side or bottom. This results in less brilliance and value.

Polish

Indicates the care taken by the cutter in shaping and faceting the rough stone into a finished and polished diamond.