शीतोदकीयं पद्माभं कालस्निग्धं वा ॥ कZ_०२.११.५३ ॥
śītodakīyaṃ padmābhaṃ kālasnigdhaṃ vā
‘শীতোদকীয়া’ পদ্মসদৃশ দেখায়, অথবা কালো ও মসৃণ/চকচকে।
It signals a recognizable sheen/appearance associated with quality; such cues support rapid field verification without specialized instruments.