किञ्जल्कवर्णं मृदु स्निग्धमनादि भ्राजिष्णु च श्रेष्ठम् रक्तपीतकं मध्यमम् रक्तमवरम् ॥ कZ_०२.१३.०४ ॥
kiñjalka-varṇaṃ mṛdu snigdham anādi bhrājiṣṇu ca śreṣṭham | rakta-pītakaṃ madhyamam | raktam avaram
色如花粉、质地柔软、光泽润滑如油、无瑕且明亮者为上等;红黄者为中等;偏红者为下等。
They provide observable inspection criteria for acceptance/rejection and pricing—supporting consistent assaying and reducing discretion-based corruption.