मसूरकं त्रिपुटकं कूर्मकमर्धचन्द्रकं कञ्चुकितं यमकं कर्तकं खरकं सिक्तकं कामण्डलुकं श्यावं नीलं दुर्विद्धं चाप्रशस्तम् ॥ कZ_०२.११.०४ ॥
masūrakaṃ tripuṭakaṃ kūrmakam ardhacandrakaṃ kañcukitaṃ yamakaṃ kartakaṃ kharakaṃ siktakaṃ kāmaṇḍalukaṃ śyāvaṃ nīlaṃ durviddhaṃ cāpraśastam
Pearls of the following kinds are not recommended/acceptable: lentil-shaped (masūraka), three-lobed (tripuṭaka), tortoise-shaped (kūrmaka), half-moon (ardhacandraka), coated (kañcukita), paired/twinned (yamaka), cut (kartaka), rough (kharaka), sanded/powdered (siktaka), gourd-shaped (kāmaṇḍaluka); also those that are brownish, bluish, or badly pierced.
It creates objective rejection criteria, reducing discretion and rent-seeking in treasury acceptance and state purchases.
A technical standard with defect taxonomy, minimum acceptable grade, and documented inspection checklist.