Item: John Hardy Two-Tone Chain Necklace. Description: 16 Inch Blackened Sterling Silver Chain Necklace With 18K Push Clasp Closure. All Kmk Luxury Consignment Merchandise Is 100% Guaranteed Authentic! Size: 16 In. Hallmark: 925, 18K, Jh. Condition: Pre-Owned In Very Good Condition With Barely Visible Surface Scratches.