To reach 14k gold, our gold is alloyed with copper and silver, making the breakdown the following-- 58.5% pure gold, 30% silver, and 11.5% copper. * All nickel free.  Please compare contents of pure gold. 10K Goldcontents 41.66 % of pure gold 14K Goldcontents 58.50 % of pure gold 18K Goldcontents 75.00 % of pure gold