Types of Diamonds Diamond Glossary 4 C's Know your Carats Clarity Diamond certificate Diamonds: shape of things Fluorescence Treatments History FAQ's Register Now E-mail Home     Shape Round Oval Emerald Heart Princess Tiffany Radiant Pear Marquise     Weight (carat)     From     To     Clarity FL S11 IF S12 VVS1 I1 VVS2 I2 VS1 I3 VS2     Color D J P V E K Q W F L R X G M S Y H N T Z I O U     Price per piece ($)      From    To     Certificate GIA GTS HRD EGL IGI CHUO AGT ZEN     Cut Triple Excellent H & A Poor Excellent Very Good Good Fair     Polish Excellent Very Good Good Fair  Poor     Fluorescence Very Strong Strong Medium Slight Faint .