4.4mm Reversible Greek Key Herringbone Chain Necklace Solid Sterling Silver  Metal Condition Finish Avg. Weight Width Length Clasp Type Retail Price Real Sterling Silver 925  (Stamped 925, Italy) Brand New Polished 8.70 grams 4.40mm= 3/16" Selectable from 16", 18", 20" from the dropdown menu above Lobster Clasp $149.99