So here's the deal. My gf really wants a 1 carat diamond engagement ring from tiffany's in the traditional 6 prong setting. However, I am in possession of a family diamond ring recently appraised at $13,000 and 1 carat. I do not currently have the actual appraisal in front of me so I have no more additional info. So it is a bit of a mystery. I would like to know what the quality of this ring is based on the info I have provided. My novice research has shown that it is likely F-D and probably VS1 or VVS2. Would you people agree? Also, Based on the info i provided, how does this diamond compare to a traditional 1 carat diamond from tiffanys? Any help would be greatly appreciated. Also, what is the typical price range of a 6 prong tiffany setting?