Petite Sea Shell Necklace Aquatic Ocean Mermaid Gold Tone ND38 Oyster Pendant Beach Fashion Jewelry Ships from the USA Petite Seashell Necklace. Timeless design that compliments any outfit. Pendant Size: 1/2 inch. Entire Length of Necklace, Open Laying Flat: 14.5 inches. Makes a perfect gift. Search Magic Metal Jewelry for more jewelry styles.