What are these diamond worth?

Recently I inherited 3 loose diamonds and I am wondering if someone can help me to figure out their value, so that when I try to sell them I have a ballpark price, the diamonds are as follows: 1. Carat: 1.2 Cut: Excellent Color: E Clarity: SI2 2. Carat: 0.31 Cut: Good Color: K Clarity: SI2 3. Carat: 0.34 Cut: Fair Color: H Clarity: I1