नागपर्वतकं रूक्षं शैवलवर्णं वा ॥ कZ_०२.११.५४ ॥
nāgaparvatakaṃ rūkṣaṃ śaivalavarṇaṃ vā
「Nāgaparvataka」は乾いて粗い、または海藻のような緑色である。
Dryness/roughness can indicate age, storage conditions, or a different grade; recording it supports rotation decisions and valuation adjustments.