Gold Vermeil - Made In Italy - Hypoallergenic- If you want a waterproof herringbone chain choose our 14k gold filled version.   The thinner version of our 5.5 mm herringbone chain.  Made in Italy! This gorgeous 3.5 mm thick herringbone chain is flexible and sparkles in the light. 16 inch length with a lobster clasp with extra 1.5 inch extender. Can be clasped at 16-17.5 inches. Made using a special anti tarnish technology called ITProLux which helps prevent tarnishing or discoloring that may occur over time with basic gold vermeil sterling silver materials.  The base is 925 sterling silver with real 14k gold strongly bonded to it. So it’s perfect for sensitive skin. Make a statement. Layers beautifully with our other coin necklaces.