What does 14k FM mean on a gold ring?

The marking "14k FM" on a gold ring indicates that the ring is made of 14 karat gold, which means it contains 58.3% gold and 41.7% other metals for strength and durability. The "FM" could refer to the manufacturer or a specific design or collection within that brand. It's important to verify the authenticity of the mark with a jeweler if you're unsure about its significance.