I had a 3.51 round brilliant SI1 F diamond to sell. I had worked for a jeweler years ago selling diamonds so I am very knowledgeable and knew what would be a reasonable price. Prior to finding Kal Diamonds I met with 2 large diamond buyers in Scottsdale and they gave me low ball offers. Then I found Kal Diamond and Zach was awesome. He is very knowledgeable and honest, he made me an offer I couldn't refuse. I liked working with him so much that I bought another stone from him. I highly recommend Kal Diamonds!