COMMEMORATE her birthday with our trendy 14K gold-dipped Birthstone Necklace with Emerald Crystal in a message bottle. ADJUSTABLE CHAIN extends from 16?? to 18??, accommodating the necks of most teens and adults. 2?? GLASS BOTTLE boasts a cork top and contains a small scroll with an inspirational message. NICKEL-FREE design is gentle and non-reactive on sensitive skin. Pendant is 5/16?? in diameter. STURDY LOBSTER CLASP provides a reliable closure, reducing the risk of the necklace becoming lost.