a heavy reddish mineral consisting of mercuric sulfide; the chief source of mercury
2
rasaka
[alchemy] one of the mahārasas
1
pearl
a smooth lustrous round structure inside the shell of a clam or oyster; much valued as a jewel
1
rasāñjana
vitriol of copper or a sort of collyrium prepared from it with the addition of Curcuma or from the calx of brass with Amomum Anthorrhiza or from leadore