सकेसरः स्निग्धो मृदुर्भाजिष्णुश्च निकषरागः श्रेष्ठः ॥ कZ_०२.१३.२० ॥
sakesaraḥ snigdho mṛdur bhājiṣṇuś ca nikaṣarāgaḥ śreṣṭhaḥ
La meilleure trace/couleur sur la pierre de touche est celle qui est riche comme du pollen, brillante, douce et lustrée.
They translate metallurgical quality into field-usable criteria for inspectors, enabling standardized grading without advanced instruments.