Vanki rings, also known as Nelli Mothiram, are traditional South Indian bridal ornaments, often V-shaped, symbolizing protection, marital bliss, and prosperity. The tradition of wearing vanki rings can be traced back to princesses from South Indian royal families, who wore them as a symbol of royalty and protection. Vanki rings can be made from gold, silver, or other precious metals, and may be adorned with diamonds, gemstones, or other embellishments.