सकेसरः स्निग्धो मृदुर्भाजिष्णुश्च निकषरागः श्रेष्ठः ॥ कZ_०२.१३.२० ॥
sakesaraḥ snigdho mṛdur bhājiṣṇuś ca nikaṣarāgaḥ śreṣṭhaḥ
Ang pinakamainam na guhit/kulay sa batong pansubok ay yaong masagana na parang polen, makintab, malambot, at maningning.
They translate metallurgical quality into field-usable criteria for inspectors, enabling standardized grading without advanced instruments.