कालायसस्यार्धभागाभ्यक्तं कृष्णं भवति ॥ कZ_०२.१३.५५ ॥
kālāyasasyārdhabhāgābhyaktaṃ kṛṣṇaṃ bhavati
ಕಪ್ಪು ಕಬ್ಬಿಣ (ಕಾಲಾಯಸ)ದ ಅರ್ಧ ಭಾಗದಿಂದ ಲೇಪಿಸಿದರೆ/ಸಂಸ್ಕರಿಸಿದರೆ ಅದು ಕಪ್ಪಾಗುತ್ತದೆ.
Surface treatments can disguise base metals; state knowledge of such methods supports enforcement against fraud in bullion, ornaments, and coin-like pieces.