What does frz mean on gold chain?

"Frz" on a gold chain likely refers to the purity of the gold. Gold jewelry is often marked with a karat stamp to indicate its purity, with 24 karat being the purest form of gold. However, some jewelers may use alternative markings such as "frz" to indicate the gold's purity level. It is important to consult with a jeweler or use a gold testing kit to accurately determine the purity of the gold chain.