Ring with a precious stone. Logo for the jewelry store. Web site icon Macho libre cufflinks Guiot de Bourg Bague Etoile Lisse Argent Guiot De Bourg Ocarat Boutique Bijoux Guiot de Bourg Paris Bijou en argent Vintage Cowrie Shell Ring With Sterling Silver by GypsyDaysVintage. . 925 sterling silver oxidized Pixel ring. Width 12 millimeters. Band size 68mm or US size 12. 25 11g of Silver. Made & Designed in France by Guiot de Bourg The prestigious brand Guiot de Bourg was founded in 1905 in Paris. Today, their sterling silver jewelry made in France is still manufactured in their workshop in the heart of the Marais. Since 1965, the company has been woman owned: first with the original goldsmith's daughter, and then in 2004 long time employee Chantal Mathieu took over.