Parad or mercury Shivlinga is said to be the purest Shivlinga. Worshipping parad shivling is equal to worshipping 12 jyotirlingas. Bringing this shivling is said to bless one with prosperity and happiness. In Brahma Purana it is mentioned that those who worship parad shivling with full devotion attain salvation.
Dimension (in CMS): Large:L-3.5/B-3/H-3; Small:L-3.5/B-2.5/H-3
Weight (in gm): Large:67;Small:59
Material: Parad