I bought this from a sale of estate jewelry out of Corpus Cristi, Tx. It is size 12, lost cast wax, 24 grams total weight. Tested 14k no stamps.
Lots of webbing and there is no signature identified, just a series of etched Markings like cuts. I would love to know more. Please any help would be appreciated.Welcome to the forum. That is one nice looking ring.
WoW.
Your photo color was a little washed out from the direct sunlight so I tried to bring it back with an auto levels adjustment in photoshop.
research Lander Blue Turquoise for a possible match until the big guns here check in.
curious as to an approximation of purchase price. Wow.
Not likely to be Lander. I would guess Lone Mountain or high grade kingsman.
Edited to add Paiute Turquoise as well. Strong contender.
BTW - I love it! 
Can we get a picture in natural light?
I sent a message to see if John Hartman created my ring. Hopefully I will get a reply.
on 8/3 at 6:09 pm I sent an email to his son Dillon@ asking the same thing. made sure no links or attachments in message hoping to get past any spam filters but no response up to this point. might take a phone call if the line is still working. I think I read they closed down the brick and mortar and went strictly online.
I think you have an exceptional ring and I hope that it turns out to be Lander. Regardless of what an authority says, wear it with pride.
I read fairly recently that Durango was no longer doing appraisals unless you want to sell to them. That may be part of the lack of response.
I understood that but thought that they might not be replying because of the appraisal statement. I hope you hear back soon.
@Islandmomma I apologize for saying only other… the maker could very well be neither of two above mentioned.
What an incredible ring! I bet you’re right that it is one of Hartman’s. He responded to a question of mine a few years ago about some Bisbee turquoise fairly quickly. Maybe send a snail mail too?
Did you ever hear back from them?
A message sent in a FB NA Jewelry site. Dillon Hartman is in group hopefully will hear soon!. Many positives regarding Lander. I will update as soon as I know something 
The photos taken in natural light definitely look more Lander. not High grade kingman or Paiute or I thought earlier. Pretty amazing what good lighting can do!
