Vintage Modernist / Brutalist MCM Ring, Approx Size 8

A marvellous modernist ring in 90% silver (an unusual purity to find here). Perhaps Baltic in origin? Even though it is marked 90, it does test positive for sterling. The stone is a cool smooth blue cabochon, with cloud-like inclusions that you can see when it’s held up to the light. Lovely! Approximately a size 8.25. I wear an 8 and this piece is a tiny bit roomy for me. No markings except for the unexpected “90” for purity, which is on the outer bottom. Follow along with all of my vintage finds on Instagram @ShirleyToGoodnessVintage 🤍