Declension table of ?brahmaratna

Neuter	Singular	Dual	Plural
Nominative	brahmaratnam	brahmaratne	brahmaratnāni
Vocative	brahmaratna	brahmaratne	brahmaratnāni
Accusative	brahmaratnam	brahmaratne	brahmaratnāni
Instrumental	brahmaratnena	brahmaratnābhyām	brahmaratnaiḥ
Dative	brahmaratnāya	brahmaratnābhyām	brahmaratnebhyaḥ
Ablative	brahmaratnāt	brahmaratnābhyām	brahmaratnebhyaḥ
Genitive	brahmaratnasya	brahmaratnayoḥ	brahmaratnānām
Locative	brahmaratne	brahmaratnayoḥ	brahmaratneṣu

Compound brahmaratna -

Adverb -brahmaratnam -brahmaratnāt