F1 14k

Fred The Diamond Guy Staff asked 2 months ago

I have a family ring. On the inside of the ring it has stamped on it: F1 14K. It also has a square embossed inside the ring close to the crown. Does the F1 relate to the diamond clarification or is it just an artist design stamp.
Is it a common practice to stamp a classification or clarity score on the inside of a ring?
Thanks for your help.

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