I only have the one photo, but it looks like it's maybe a defaced nazi ring? The red is embossing, not stones.
I've looked through more nazi rings on my work PC than is probably appropriate, and I don't see it. It's solid 14k gold, but not marked inside.
Not to discourage answers, but just because I think there have been previous requests like this that have had better luck with a response, you might might want to x-post this to /r/whatisthisthing.