Tiffany & Co Authentic Vintage Elsa Peretti Feather Sun Wave 925 Sterling Silver clip on earrings. Tiffany & Co, Elsa Peretti, Spain and 925 Marking on back of earrings as shown in photos. The earrings weigh 9.3 grams of 925 Sterling Silver. I have several photos with a ruler for approximate size. These are difficult to measure due to their shape. Tiffany box and pouch included. See photos as an extended description and condition of earrings. These beautiful classic Tiffany earrings will add an elegant touch to any outfit.