Art Deco Style Genuine London Blue Topaz .925 Solid Sterling Silver Antique Style Filigree Ring. The Top Of The Ring Measures 3/8 Inches In Length. Set With One High Quality 10 x 5 mm Marquise Cut Genuine London Blue Topaz Stone. 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.