The Tirunelveli tali is a regional design linked with the southern districts of Tamil Nadu, and families from that area often ask for it by name. Because the exact shape follows local custom, confirm the pattern with elders before buying. Check the weight in grams, the smoothness of the back and the strength of the thread or chain. Look at the edges for rounded finish so the tali sits... https://www.darjewellery.com/gold-jewellery/women/mangal-sutra(tali)?f=subitem_name:THIRUNELVELI%20TALI&sort=latest