• Hearts & Arrows Ideal Cut
• American Ideal Cut
• International Fine Trade Cut
• American Average Cut or Average Cut
• Below Average Cut
• AGA Round Diamond Proportions chart
• AGA Princess Diamond Proportions chart
• AGA Pear, Heart, Oval, Marquise Diamond Proportions Chart
• AGA Emerald & Radiant Diamond Proportions Chart
• Marcel Tolkowsky
• AGS Proportions Charts for Brilliant Cut

Diamond Shapes | Diamond Weight | Diamond Proportions | Diamond Color | Diamond Clarity
Interesting Diamonds facts

Below Average Cut corresponds to Below Average Cut

Corresponds to all the rest of round brilliant shaped diamonds that fall out side normal specific cutting ranges. The proportions for Average Cut as defined by AGA Accredited Gem Appraisers are set out in the AGA table below. These diamonds are too deep, narrow, shallow or wide and lose most of their brilliance and Fire, the light passes through and leaks out the stone. Some of these stone may have an interest and beauty factor, price should be well below superior diamonds.