Need assistance identifying mark on a ring

I was told this was purchased at a market in Poland. But I have other info stating that the stone (and type of ring) might be from Mt Shasta, CA. I’m confused and can’t locate this mark on any site. There is also a 925 stamp on the inside of the band (just the 3 numbers), but this one is on the outside. Many thanks!

Polish contemporary silver mark: 925/1000 silver, B= Bydgoszcz (assay office).

Many thanks! I appreciate you responding. :pray: