One of the fourteen ratnas (precious and unique animate and inanimate objects) of the Cakravartī (universal sovereign);
the jewel of the Cakravartī, which illuminates the entire camp of the army.
kākinīratnamaṣṭasauvarṇikaṃ......yatra candraprabhā sūnjaprabhā vahnidīptirvā na tamaḥstomamapahartumalaṃ bhavati tatra tamisraguhāyamatinibiḍatimiratiraskaraṇadakṣaṃ......yacca sarvakālaṃ cakravartī nijaskandhāvāre rātrau sthāpayati.
(PrasāVṛ Pa 350)