What does 14 k gf esp mean?

"14k gf esp" typically refers to jewelry made of 14-karat gold filled (gf) material, indicating that it has a layer of 14k gold bonded to a base metal. The "esp" could stand for "especially" or might be an abbreviation specific to a brand or style. Gold-filled jewelry is known for its durability and is a popular choice for affordable yet high-quality pieces.