Brass neither dissolves in water nor remains stable at one place. Due to this property of Brass, it becomes very difficult to make anything solid with Brass. But, the combination of Mercury and silver solidifies in the form of Brass Shivlingam. Brass Shivling is made from purest Brass. Brass is considered most pure, auspicious and mysterious metal due to its peculiar and unique properties. Symbolically, it is considered as the sperm (seed) of Lord Shiva. In Hinduism, Rasalingam or Brass Lingam is a Lingam, the symbol of the god Shiva, Varanasi Siddhas carved Shiva Lingam from solidified mercury. The process of solidification of mercury is the secret process enunciated by Varanasi Siddhas. In Tamil, Brass is called Brass-rasam and the Shiva Lingam made using Brass-rasam is called Rasalingam. In Sanskrit, mercury is called Brass and the Shiva Lingam made using Brass is called Brass Lingam. Rasalingams or Brass Lingams are consecrated in Hindu Shiva temples, Ashrams and other places of worships.