what does O mean on a gold necklace
If "750" is stamped on a necklace chain clasp, it indicates that the metal is 18-karat gold, which means it contains 75% pure gold and 25% other metals. This quality stamp is commonly used in jewelry to signify the gold's fineness and authenticity. The higher the karat number, the more pure gold is present in the alloy.
I think it means 10k gold
Gold Plated
What does the symbol TB mean on hook of necklace
Most likely a makers mark.
BJ18K stamped on a chain means that the chain is made of 18 karat gold. The "BJ" may refer to the manufacturer or designer of the chain.
Most likely it is Gold shell (gold plated) But it could be a jewelers mark.
14 KJ stamped on a necklace means it is 14 karat gold. This number signifies purity of gold, a top standard in jewelry.
What does gfm stamp mean on a gold chain necklace
It means that it was manufactured in Canada.
British Units