Vintage QVC Diamonique Ring, Size 6

Handed down by my mom several years ago, but it's a little too snug for me these days. Would be a great travel ring if you're worried about your diamonds. I've had this ring since college, and I turned 40 😬 this year, so that should indicate the lasting quality. The hallmark is unclear after all these years, but I did some research and it seems to be 14k yellow gold over sterling silver.