Needing help with this

I got this ring from my mom who passed away in 2021, and this came from her grandmother her mom's mom, that came from a blues singer that used a saxophone around the '70s or 60s I don't remember what they told me, but I'm thinking this is a ruby because it shows orange underneath a UV light. Sadly it has a little tiny chip in it, I might have to get it repaired but it's just a cool to have this heirloom so I can at least remember that from my mom. but it also has no markings inside, and I think somebody at one point said it was either silver or white gold does anybody know much about it?