An Art Deco designer brooch made of 14K gold. A ribbed semicircular gold frame surrounds a large faceted amethyst gemstone. Weight: 11 grams. The item comes in original lined box marked Wm. H. Ludwig, Jeweler, Chambersburg, PA. Ludwigs Jewelers is an American jewelry store established in 1877, a member of the American Gem Society. Luxury Statement Jewelry For Women.