आन्तरवत्यमुशीरवर्णम् ॥ कZ_०२.११.६७ ॥
āntaravatyamuśīravarṇam
“Āntaravatya” has the colour of uśīra (a vetiver-like hue).
To provide an operational reference for inspectors—anchoring grading to a commonly known benchmark reduces discretion and disputes in valuation.