शुल्बरूपं सुवर्णपत्त्रसंहतं प्रमृष्टं सुपार्श्वम् तदेव यमकपत्त्रसंहतं प्रमृष्टं ताम्रताररुपं चोत्तरवर्णकः ॥ कZ_०२.१४.३१ ॥
śulbarūpaṃ suvarṇapattrasaṃhataṃ pramṛṣṭaṃ supārśvam tadeva yamakapattrasaṃhataṃ pramṛṣṭaṃ tāmratārarupaṃ cottaravarṇakaḥ
A copper-shaped piece, laminated with gold leaf, polished, and with well-finished sides; likewise one laminated with double leaf (yamakapattra) and polished; and likewise a copper-wire form—these are ‘higher-color’ (made to appear of superior hue/grade).
That fraudsters engineer superior-looking color/finish to pass visual grading—so governance must not rely on hue/polish as proof of value.
Overreliance on surface finish and edge quality; the passage warns that excellent workmanship can still conceal base-metal interiors.