Mangalsutra

A mangala sutra (from Sanskrit mangal, meaning "holy, auspicious", and sutra, meaning "thread") is a sacred necklace that a Hindu groom ties around the bride's neck in a ceremony called Mangalya Dharanam (Sanskrit for "wearing the auspicious"), which identifies her as a married woman. The woman continues to wear the mangala sutra as a sign of her marital status.