Parad shivling : weight : 25 to 30 gramsparad shivaling, parad shivling, parad shivlingam, parad shivlinga, mercury shivling, padrasam shivling, mercury shivaling, parad jyoti lingam complete with 8 sanskaars (8 stage of purifications done as per parad sanmhita) and removal of saptakanchuki ; the siddha parad (mercury mouth closed with aghor vidhya) is formed to make murthi-badhha / agnibadha (sustain the heat) shiva lingam. The extract from this shivling gives 24 ras and 5 tatva which removes all diseases in the body. Mercury is a naturally occurring element that is found in air ,soil or water. It exits in several forms : elemental or metallic mercury , inorganic mercury compounds & organic mercury compounds. Mercury is an element in earth crusts, humans cannot create or destroy mercury. Pure mercury is a liquid metal,sometimes referred as quick silver that volatizes readily . It has traditionally used to make products like : thermometers ,switches & some light bulbs. Mercury is find in many rocks including coal. When coal is burned mercury is released in environment. Mercury & it's compounds have been used in medicine although they are much less common today than they once were, now that the toxic effects of mercury & it's compounds are more widely understood. The benefits, especially on your health, of worshipping lord shiva in the month of shravan are said to be immense. The lingam is a symbol of shiva, which means auspiciousness itself – the power of the soul. In the legends, the lingam and the feminine creative power yoni together symbolise the merging of shiva with shakti, which confers ultimate liberation for the sincere worshipper. Dimension's : weight : 60-70 grams (approx) parad (mercury) shivling according to various purana's : the glory of mercury shivling has been stated unequivocally in the puranas, shastras and tantra text. Mercury is said to be semen of lord shiva. To contain or bind mercury is very difficult, that too ancient mercury.