For your consideration is this gorgeous circa 1930s ring. It has intense filigree and a heavy patina. It has a beautifully cut blue stone that I do think is blue topaz. Marked Sterling.
Ring is a size 6. Face measures 3/8 inches wide.
Excellent condition. I tried to capture the beauty of the stone and ended up taking a picture outside but still don't think I captured it but pic one is most accurate in color.