स्थूलं गुरु प्रहारसहं समकोटिकं भाजनलेखि तर्कुभ्रामि भ्राजिष्णु च प्रशस्तम् ॥ कZ_०२.११.४० ॥
sthūlaṃ guru prahārasahaṃ samakoṭikaṃ bhājanalekhi tarkubhrāmi bhrājiṣṇu ca praśastam
Commendable (diamonds) are those that are sizable, heavy, able to withstand impact, evenly edged, capable of scratching a vessel, causing a spindle/whorl to spin, and lustrous.
To give officials operational criteria for acceptance, valuation, and dispute resolution, reducing arbitrary judgments and corruption opportunities.
They serve as practical field assays for hardness and workmanship/shape, usable without advanced instruments.