This is a fountain pen nib. The nibs are all stamped with 14K and 18K markings. Currently, pure gold exceeds 29,000 yen per gram. 14K gold contains 58.5% gold, and fountain pens are also valued for their metal content. The nib (pen point) is 3.2g in 14K. It is 0.6g in 18K. Please note that there may be errors as this is an amateur measurement. Since it is used, please understand that there are scratches and stains. Those who purchase this item are considered to have agreed to these conditions, and we cannot accept returns or handle claims. Thank you for your understanding.