What does nb-14k mean on a ring?

The marking "nb-14k" on a ring typically indicates that the piece is made of 14-karat gold, with "nb" possibly representing the manufacturer's initials or a specific design code. The "14k" signifies that the gold content is 58.3% pure gold, with the remaining alloy made up of other metals for durability and color. This marking helps identify the quality and authenticity of the gold used in the jewelry.