What does 14kt GF ESPO mean on a ring?

The marking "14kt GF ESPO" on a ring indicates that the piece is made of 14-karat gold-filled material. "GF" stands for gold-filled, meaning it has a layer of gold that is mechanically bonded to a base metal, making it more durable and less prone to tarnishing than gold plating. "ESPO" likely refers to the manufacturer or designer's brand or mark. Gold-filled jewelry offers a more affordable alternative to solid gold while still providing a quality appearance.