Vintage Triple Knot Pierced Earrings Marked on Back of Hinge 750 = 18 kt Gold 15mm Diameter Round 5mm Pearl 750 gold is made of 75% gold. The remaining 25% of the piece is made up of additional alloy, metals and materials. 750 gold and 18-karat gold are the same. Both are 75% gold content. Will ship Gift Boxed Total weight is 4.5 grams, which includes the pearl. I am pricing at well below market rate for gold. One Owner Always in a Non Smoking, Climate Controlled Home Fast Shipping Daily from Florida USA