तदुभयं तापनिकषाभ्यां निह्शब्दोल्लेखनाभ्यां वा विद्यात् ॥ कZ_०२.१४.३२ ॥
tad ubhayaṃ tāpanikaṣābhyāṃ nihśabdollekhanābhyāṃ vā vidyāt
ସେଇ ଉଭୟ ପ୍ରକାରକୁ ତାପନ ଓ ନିକଷ (ଟଚ୍ଷ୍ଟୋନ୍) ପରୀକ୍ଷାରେ, କିମ୍ବା ନିର୍ଶବ୍ଦ ଖୁରଚା ଓ ଉଲ୍ଲେଖନ/ଖୋଦନ ପରୀକ୍ଷାରେ ଚିହ୍ନଟ କରିବା ଉଚିତ।
Because surface treatments (leaf, polish, color enhancement) can defeat any single method; layered verification reduces false acceptance.
Institutionalize standardized assay procedures and require objective tests (not mere appearance) before accepting, storing, or paying out precious metals.