China
Can you get an in focus photo of the stones. It looks like someone carved a pattern into a piece of charcoal and poured the metal into the pattern.
Can you take a couple close up photos of the ring on a white background including the top of the inside.
Looks like Native American theme.
Maybe it's a terminology issue,it is not a style but whether the graver is polished or not when the cuts are made.........
Is it bright-cut or just engraved,impossible to tell since it has been polished.
Composite made from crushed stones and resin...... https://www.makermaterialsupply.com/collections/trustone
Looks like standard acanthus engraving,not seeing bright cut.
Why would it be niello,just because it is black and silver? Some silver,copper,lead and sulfur... usually requires a "pocket" or channel for the...
I wonder if it is actually niello.
If you plan on removing a lot of stones,this might help.... https://www.esslinger.com/prong-lifter-jewelry-stone-remover-4/
It depends on which type of toothpaste you use,some are very abrasive...................
Post the ring in Jewelry with inside surface photos.
I guess you never watched the historical dramas.... Detective Dee or Detective K with all of the bad Royal court officials and their...
https://www.etsy.com/listing/764445942/browns-mule-tobacco-stamp?ga_order=most_relevant&ga_search_type=all&ga_view_type=gallery&ga_search_query=bro...
baroque pearls
Like everything in the military they need support from various other specialties. The pin looks like the brass ribbon/banner was added and the pin...
So called "bog oak" can be from oak,yew and pine trees and the wood can be black,brown and yellow.
US Army Air service 1918-1926
A satin finish on the rings,nothing unusual about that.The hundreds of gold rings I made all had a satin finish.........
Separate names with a comma.
