Thickness: 1.2mm/0.047" Hook: Double Hooks Chain type: Cable Chain Infinity Size: 3 x 1.2cm/ 1.25" x 0.51" Material: 925 Silver Thickness: 1.2mm/0.047" Hook: Double Hooks Chain type: Cable Chain Infinity Size: 3 x 1.2cm/ 1.25" x 0.51" Material: 925 Silver Infinity Symbol Jewelry Necklace Engraved Name 18K Gold Plated - Simply use classic infinity name necklace to say your forever love. These are unique necklaces owing to the design of the infinity symbol and engraved name on it. Make one infinity necklace to celebrate your love! You should get a certificate of authenticity with your diamond. This should be from an independent source. Antique diamonds need to be at least a hundred years old to be considered antique. The diamond should also be from a recognizable European art period.