Native Treasure - 18" inch Tiger Puka Shell Necklace - Large Shells - 8mm (5/16") Standard 18" Inch Length. Should fit up to a Size 16.5" Shirt Collar Size. Please Measure for Your Size. 8mm (5/16") Class 'A' Quality Hand-Sorted Real Puka Shells Hand-Crafted in Our Tropical Jewelry Shop by Our Native Island Artisans Includes FREE Stainless Steel Beading Wire Upgrade, Silver Plated Trim, Sturdy Twist-Barrel Lock Exclusive 60 Day Free Breakage Replacement 100% Satisfaction Guarantee You can return this item for any reason and get a full refund: no shipping charges. The item must be returned in new and unused condition. Go to Your Orders to start the return Print the return shipping label Ship it!