इन्द्रनीलो नीलावलीयः कलायपुष्पको महानीलो जम्ब्वाभो जीमूतप्रभो नन्दकः स्रवन्मध्यः ॥ कZ_०२.११.३१ ॥
indranīlo nīlāvalīyaḥ kalāyapuṣpako mahānīlo jambvābho jīmūtaprabho nandakaḥ sravanmadhyaḥ
(種類として)「indranīla」「nīlāvalīya」「kalāyapuṣpaka」「mahānīla」「jambvābha」「jīmūtaprabha」「nandaka」「sravanmadhya」がある。
A distinctive internal feature used for identification and grading—useful for detecting substitutions and for consistent pricing across officials.