What it a 526 mean on my ring?

The number "526" on your ring likely indicates the ring's metal purity or a specific design or model number. In jewelry, numbers often represent the karat weight of gold (e.g., 14K gold is often stamped with "585" for 58.5% gold content), but "526" doesn't correspond to a standard purity mark. It could also signify a manufacturer's code or a specific collection. To get precise information, consider consulting a jeweler or the brand that produced the ring.