The 3 layer Kingston necklace is made from 2 rounded recycled brass Cuban link chains & 1 Large Elongated Link Chain, fastened with a with lobster clasp. Necklace also includes 1 Medium Helena pendant and a 5.5" Extender. Finishes available: 14K Gold or Rhodium-Silver.Layer Necklace measures:1st chain measures 16" around the neck.2nd chain measures at 20.5" 3rd chain measures at 24.75" Curb chain measures:10.57mm (.416") wide x 4.77mm (.18") thick.Large Elongated Links measure: 6.5mm wide x 17mm long.Clasp Measures:19mm (.74") long