Need helps from the Tiffany experts!
Found a ring for sale and on the Tiffany certificate dated in 1980 says "extra extra river" color. Can anyone tell me what it means in the GIA term (e.g D,E,F,G,H,I, etc). I asked many people and got no answers. I really hope that someone here has the blue book printed around that period so I can find out. I will also send the ring to GIA for valuation because the stone may not be the ''original''.
Thank you so much!
