How Can You Identify a Jewelry Manufacturer's Trademark?

To find jeweler trademarks, use a jeweler's loupe to inspect metal jewelry underneath a stone's mounting, inside the band of a ring or near the clasp of a necklace. The Antique Jewelry University's online encyclopedia provides pictures of many jewelry trademarks, and the features pictures of silver marks.

Jewelry may bear markings for its purity, trademark, date created or townmark. Though some countries require jewelers to stamp or engrave a trademark, or maker's mark, on all gold and silver products, the United States only requires jewelers to mark gold and silver for its purity value. Many manufacturers, however, such as Tiffany & Co., seal their creations with their name.