www.925-1000.com

I was able to locate a man who is a Native American jewelry expert, predominantly Navajo, and he was extremely helpful. Wanted to pass along his reply: "It definitely looks like a Native American piece...one sign that it is most likely Native made is that it is stamped Sterling versus 925 or .9...

Hi Aguest:

Thank you so much for sharing your experience. Native American would certainly make sense. :)

Hello: Newbie here. I have a gorgeous black onyx sterling silver necklace that is marked "H Sterling" on the back. I'd like to know the name of the manufacturer as well as the approximate date it was created. All I've been able to find so far is Glasgow Date Letters: H = 1878. https://www....