This is an old, possibly Deco period Intalgio ring with probable onyx. There are two soldiers depicted with the second soldier behind the first. You can barely see his profile. This ring weighs a heavy 8.7 grams. It is a size 10.25. The face of the ring measures 20 x 15 mm. The inside band reads 10k and handmade.
Also I have included some pictures of the inside of the band and the writings that are inscribed.