Mangala sutram literally means an auspicious thread which is knotted around the brides neck. It is usually a necklace with black beads strung from a black or yellow thread prepared with turmeric. Sometimes gold, white or red beads are also added to the mangala sutram, depending on regional variation. It is a symbol of marriage worn by women. The idea of sacred thread existed for centuries, even going back to sangam period. But the nature of these auspicious threads have evolved over time, and varies widely according to various communities. Non hindu religious groups such as syrian christians also wear mangal sutra, but with a cross on it. There are many communities in india, among whom the mangal sutra seems to be absent, and other forms of marital tokens have taken their place. For example, in large parts of north india, the toe ring and glass bangles indicate the marital status of a woman.