Hollow Curb Cuban Necklace Chain. 100% Authentic 14K Gold "Not Plated or Filled.". Material: 14K Genuine Gold. Stamp: 14K. Clasp: Lobster Claw. Chain Style 26" :3.70g 26" :5.70g 26" :7.80g. 28" :4.00g 28" :6.10g 28" :8.40g.