What does 14 and C D and a shell mean stamped on a French ring?

The markings "14" and "C D" on a French ring typically indicate the gold purity and the jeweler or designer's initials, with "14" signifying 14-karat gold. The "shell" symbol can represent a hallmark, often associated with a specific region or a quality standard in French jewelry. Together, these markings provide information about the ring's material and craftsmanship.