I bought this ring to use as a ring jacket for my diamond and it didn't work—the construction of my ring around the solitaire was too thick, it just wouldn't fit snugly. 🙁 So, now I am selling it. 🙂 It's signed B Sterling with either a Z or a lightning bolt, I'm not sure who that artist is. Size 7 Nice set! There is a sterling turquoise band ring that fits into the other larger ring base. Unique