Sterling Silver Filigree Ring | London Blue Topaz This London Blue Topaz filigree ring is handcrafted and finished in intricate sterling silver detail. Filigree rings are timeless in style and can be enjoyed, cherished and handed down as precious family heirlooms. In ancient times blue topaz was believed to assure beauty, fidelity and long life. It is now the birthstone for the month of November. The blue topaz has also been designated as the 4th wedding anniversary stone. This classic silver jewelry piece is new a quality antique reproduction, made of the highest quality sterling silver and comes complete with a money back guarantee.