Art Deco Style Genuine Black Agate 3 Stone .925 Solid Sterling Silver Filigree Ring. The Top Of The Ring Measures 3/8 Inches, 10mm In Length. This Classic Antique Style Ring Is Set With 3 Genuine Black Agate Stones. Inspired By The Original Designs Of The Victorian To The Art Deco Period, 1836-1935. Item Is Stamped 925. Our Silver Is Genuine 925 Sterling Silver.