I have a sterling silver ring with turquoise stones signed by joe chee, it is from the 70's. Who is he andho can I find its value

Joe Chee is a pretty well known jewelry maker. He is Navajo and his work is hard to come by. Unfortunately he has passed on. Reason I know so much about him is that I am married to his granddaughter. If you would be willing to part with ring, I would sure like to purchase it for my wife. She only has a bracelet from him and I think a ring would be great for her too. Let me know if you are interested.

I was given a 4 stone coral ring with feathers on the side of Joe Chee's and was wondering what the value was?