Natural red coral Red Beaded Necklace 16 inches, 17 inches, 18 inches Tiny 3mm beaded necklace Dainty Daily Choker Materials: Natural Coral Beads, Stainless Steel. Gemstone Beads Size: 3mm. Closure: Lobster Clasp. Chain Extender Length: 2 inches. Necklace length: adjustable from 16 inches to 18 inches.