Gold Tone Caduceus Charm Necklace. Gold Tone Caduceus is approximately 0.74 x 0.7 x 0.13 inches (HxWxD) not including loop. 3-D antiqued caduceus. Silver plated necklace is 19 inches plus 2 inch extender chain. Lobster Claw Clasp. Beautiful fashion necklace makes a wonderful gift. PLEASE NOTE: Our products are lead safe, but are not intended for children 14 years and younger.