by wawag » Jun 30, 2014 *NOTE: I'M A COMPLETE DIAMOND NOVICE/KNOW NOTHING** I'm thinking of upgrading my round diamond solitaire engagement ring and have a question about the original diamond certificate that I received when the diamond was purchased in 1997. The date on the HRD cert is 10/10/96. The HRD cert doesn't look very detailed (compared to what I see on line these days with new stones) which I fear will hinder my efforts in trying to sell my diamond privately or trade it in. Should I seek a better certificate? I have a few appraisals that have been done over the years (for insurance purposes). The most recent appraisal was done by EGL, Inc. The appraised value of the ring (14 kt yellow and white gold Tiffany style mounting, 1.05 ct H vs1 - finish grade/proportions - very good) is $13,150. I'm trying to determine what the diamond is worth or what I can expect to sell it for (a fair price). I'm confused as to how to determine what my diamond is worth given the limited amount of info on the HRD certificate. Any advice would be helpful. Thanks!