Nickel Free 9ct Yellow Gold Hinge Earring with a crystal square pendant. 
 
Generally fits the Helix & Standard Lobe
See  for more info

 Diameter: 12mm (Internal Diameter: 9mm)
 Gem Rectangles (4): 4x2mm
 Weight: 0.53g 
Gauge: 1.2mm/16

 Sold as a Single or Pair