The parad shivling in Vedic traditions has a very spiritual and symbolic meaning. Made of refined mercury or parad, this divine image of Lord Shiva is considered to be the divine power, harmony, and change. The reason why devotees tend to use the parad lingam as their daily worshiping idol is that it is believed to draw good vibrations and counteract bad vibrations in the environment.... https://vedicvaani.com/shivling-shiva-lingam/shivling-in-parad-mercury