Abu Dawud
Signet Rings
Book Number: 029 / Hadith Number: 4226
Narated By Asma', daughter of Yazid : The Prophet (pbuh) said: Any woman who wears a gold necklace will have a similar one of fire put on her neck on the Day of Resurrection, and any woman who puts a gold earring in her ear will have a similar one of fire put in her ear on the Day of Resurrection.