What does 930 stand for on gold jewelry?

The marking "930" on gold jewelry indicates that the piece is made of 93% pure gold, which is equivalent to 22 karats. Pure gold is 24 karats, so 22 karat gold is 22 parts gold and 2 parts other metals. This marking is commonly found on gold jewelry from countries like India, where 22 karat gold is a popular standard for purity.