Rasamanjari 3.98

3.98

<ratnaśodhanam>
śudhyatyamlena māṇikyaṃ jayantyā mauktikaṃ tathā /
vidrumaṃ kṣāravargeṇa tārkṣyaṃ godugdhakaistathā //

<Purification of gems>
Ruby is purified by sour [gruel], pearl by Sesbania sesban, / coral by the group of alkalis, and emerald by cow's milk;