Huge Garnet ring

enormous Garnet Solitaire piece, with back spinel, could be black diamonds, I really don't remember , but the third photo shows the stamp of 925, I've had these rings for many years and don't know where the paper work is, from moving. but it's a gorgeous Garnet, size 10. and it might be a RUBY AND BLACK DIAMONDS! I really can't remember but I'm going to try to find the paperwork! but till then if someone buys it and it's Ruby and black diamonds (which I have a strong feeling it is) my loss your gain!