New vintage costume birthstone ring

New vintage costume birthstone ring September Blue Sapphire? Faux. You can see facets in the light. It’s a pretty blue-blue! Not just for September birthday people! Goldtone band with beautiful simple diamond cut chevron zigzag designs. Shiny! Almost 3 mm wide, +1 mm thick. Solid feel and lightweight. New vintage c. 1970s. Costume gold and faux gem. Size 5 Group photos show other pieces in the collection.