What does pj mean on gold jewelry?

"pj" on gold jewelry likely refers to the purity of the gold, specifically indicating that the piece is made of 14 karat gold. Karats are a measurement of the purity of gold, with 24 karat gold being the purest form. Therefore, 14 karat gold is 14 parts gold and 10 parts other metals, making it 58.3% pure gold. This marking helps buyers understand the quality and value of the gold jewelry they are purchasing.