Silver Tone Mini Caduceus Crystal Initial - Sophia Necklace. Silver Tone Mini Caduceus is approx. 0.49 x 0.41 x 0.12 (HxWxD) including loop. Antiqued medical caduceus is the same on both sides. 1.5mm Dainty Cable Chain Necklace: 18 inches with 1 inch extender chain and lobster claw clasp. Silver Tone Small Crystal Initial with Beaded Border is approximately 0.38 inches not including loop. Dainty and delicate, the Sophia Collection is about wearing an expression of what she cherishes, with just a little bling to brighten her day. PLEASE NOTE: Our products are lead safe, but are not intended for children 14 years and younger.