A Gorgeous Classic Antique Diamond Wedding Band Ring by Granat Brothers, San Francisco, 18K White Gold, Vintage Art Deco, c.1920-30's. This stunning antique diamond ring holds seven (7) fine white antique single cut diamonds across the top. They are beautifully set in 18K white gold. The ring was made by Granat Brothers (signed inside the shank), the famous high-quality jeweler established in 1905. They had stores in the San Francisco Bay area and are known for their quality. Overall the ring measures about 3/32 inch long or about 2.5mm long by about 11/16 inch wide from side to side. Ring Size: about 5 (could be resized by your jeweler or ask me about using mine before shipping). This ring was acquired through a fine estate collection and is in lovely vintage condition.