Round Diamonds: 0.001 – 2.99 Cts (D-I Color VVS1 – I3 in non cert fine makes).Emerald and Oval Layouts: 0.10 -0.75 ((D-I Color VS1 – Si2 in non cert ).True Hearts & Arrows Rounds: 0.05 -0.75 Cts (CGL Certified and Non Certs).Gia Diamonds: 0.25 – 5.00 Cts (D- J Color VS1 to Si2). Over 8000 GIA certified Diamonds