Sterling Silver Moonstone Ring Size 9

Sterling silver moonstone ring. It’s not marked but it was sold to me as sterling silver. The moonstones have a nice blue flash more apparent under certain lighting and angles. It appears to measure a size 9 on my ring mandrel, but because the band is wide it fits more snug. I have worn this on a finger that I normally wear a size 8 and it fits fine. The face of the ring measures just over 1” and tapers to .5” at the back. Very minor scratches. It’s in nice pre-owned condition.