We only work black gold 18 carats or 18K or 750/1000 ° gold, composed of 75% pure gold, 12.5% ​​silver and 12.5% ​​copper On the surface by electrolysis we deposit of rhodium for the black color. Goralska continously and closely ensures the quality of the sourcing of the raw materials used in its creations.The hallmark confirms the 18 carats gold is an eagle’s head.