Is it against the law in ct to return earrings?

No, it is not illegal to return earrings in any state. You are protected by Federal consumer laws read the following.

Those new earrings don't match your outfit after all. But the store says health rules prohibit such returns.

The law (Federal Consumer law)

Despite what you may have heard, it's a myth that federal law prohibits the return of earrings, underwear, bathing suits, and similar items.

You should know

But merchants can-and often do-adopt their own policies against the return of such products. Absent that, your right to return such items falls under the store's general return policy or your state's refund law, if there is one. If a merchant tells you that a state or local health rule prohibits such returns, verify it with local consumer officials.