Parad Is considered to be Sperm of lord shiva. Worship of Parad Kashyap shree yantra destroys Sins, thus one feel free from Sorrow and helps to fight disease. It has been said in puranas that one who worships mercury ( parad) in any form gets full worldly pleasures and attains salvation.
Parad Kashayap (Shree yantra) is considered to be blessed with Lord Shiva, Goddess Laxmiji and Lord Vishnu. It is beleived that one who keeps laxmi kashyap together will help to attract and attain wealth, as laxmiji comes where vishnuji is there and turtle represents Lord vishnu, so kashyap shree yantra is considered to be more powerful than shree yantra also.
Mantra - "Om Shreem hreem Shreem Kamale Kamalalay Praseed Praseed
Om Shreem hreem Shreem Mahalaxmay Namah"
Parad Kashayap Shree yantra can be kept at temple, counter, almarihs.
Rose Flower should be sprinkled to Paradkashyap shree yantra.
Sthapana (place of worship) can be done on friday.
Procedure for puja and Sthapana.
(1) Keep the parad kashyap shree yantra in temples in front of other devotees under red cloth.
(2) Offer Panchaamrit (Milk,curd,Ghee, Sugar, honey one by one).
(3) wash the Parad kashyap shree yantra with gangajal.
(4) chant the mantra.