Vintage, mid century in great condition. See photos please. Marked: BDA 10K 10K gold Blue glass Made by: Budlong, Docherty and Armstrong, a jeweler that was in business in Providence Rhode Island from approximately 1850-1971. Such a pretty ring! My pictures don’t do it justice, much prettier in person. Tags: woman’s ring, blue, glass, 10K, gold, aquamarine, sea blue, matte gold, art deco, vintage ring, vintage jewelry, brushed gold, mid century.