Part 2 - Purification of Diamonds

First process.

Diamond is purified, if it is boiled for three hours, by means of a Dola-yantra, with the decoction of kulattha or kodrava (a kind of grass paddy).

Second process.

Diamond is purified, if it is put inside the tuber of vyaghri (red eranda plant or kantakari), and boiled for seven days, by means of a Dola-Yantra, with the decoction of kodrava and kulattha.

Third process.

Diamond of excellent quality is to be put inside the tuber of vyaghri (red eranda plant or kantakari).

This is to be covered on all sides with the stool of a she-buffalo, and burnt by means of a fire made of cow-dung calces burning the whole night, at the close of which the diamond is to be immersed into horse’s urine. This process is to be performed seven nights resulting in the purification of the diamond.

Fourth process.

Diamond is purified, if it is kept inside a lime fruit and boiled for three days by means of a Dola-Yantra with a decoction of meghanada, shami, shyama, shringi, madana, kodrava, kulattha, vetasa, agastya, (vasaka or vaka), and nirgundi, mixed with a sufficient quantity of water.

Fifth process.

Diamond is purified, if it is kept inside the tuber of a vyaghri plant coated on all sides with mud, heated by puta for twenty four hours, and then immersed into horse’s urine or milk of snuhi.

Any gem or ratna is purified, if it is boiled in a Dola-yantra for one hour with the juice of jayanti leaves.