"Isn't it a bird egg? Cat wanted to see closely. Cat and birdcage pendant are made of 20 gauge sterling silver wire with a piece of fresh water pearl. Necklace: sterling silver chain 18" Approx size: Cat: 40mmW x 54mmH. Birdcage: 22mmW x 39mmH #To ensure it's safely arrived at your home, each item will be shipped REGISTER MAIL with track number. #Please see 'Shop sales policy' before purchase *Thanks for visiting!