Yes. Authentic Tiffany smiley face necklace, the edge of the Tiffany trademark is very neat, the steel seal is 18k gold, there is a small bulge on the edge of the font letters, which is a mark, the steel seal is a little blurry, which is a very important sign. Tiffany & Co. is an American watch, jewelry, and silversmith company founded in 1837 in New York City by Charles Louis Tiffany and Teddy Young.