18K GOLD EARRINGS They are genuine Made in Italy.   . Metal: 18K Yellow Gold  . Internal Diameter: 40 mm (1.6 inches) . External Diameter: 45 mm (1.8 inches) . Width: 2.5 mm (0.1 inches) . Weight: 2.2 grams  . Supplied with box, bag, warranty and invoice of our jewelry  All jewelry products in Italy have printed both, the mark of the gold fineness 750 (it is the equivalent of 18k) and that of the producer.  The earrings have them. They are accompanied by a certificate of guarantee on which is guaranteed the gold content and the Italian origin.