Please Note: These are APPROXIMATELY 1.5mm Delicate Pendant Chains ~ There is no notation on the package and my eyesight doesn't go much smaller than that. I used a mm measuring device, and I believe them to be 1.5mm but if they're 1.4mm please don't be mad at me !!  :-) THESE CHAINS ALL HAVE A QUALITY TAG ATTACHED TO THE CLASP AS YOU CAN SEE IN THE PICTURE WHICH IS STAMPED 14k GF ~ 24"