This is a wonderful design by Paloma Picasso made of Sterling Silver! It is one inch by one inch and marked on the back with both Tiffany & Co. (.925) and Paloma Picasso. Picasso had been creating for Tiffany since the 1980's! This unique pin weighs 4.8 grams; it is in excellent condition! A very fine piece of jewelry! This item comes complete with the Tiffany Blue Bag and Tiffany Box.