My mother has a 1.02 carat miner''s cut diamond solitaire, VS1 Clarity, color VH, that my grandfather found in South Carolina in 1972. We have had the diamond appraised at around $5600. We were hoping that someone could give us an idea what would be a fair price for this ring? We have a buyer but we want to make sure we are not taken. What would be a fair price?