Declension table of ?siddharatna

Neuter	Singular	Dual	Plural
Nominative	siddharatnam	siddharatne	siddharatnāni
Vocative	siddharatna	siddharatne	siddharatnāni
Accusative	siddharatnam	siddharatne	siddharatnāni
Instrumental	siddharatnena	siddharatnābhyām	siddharatnaiḥ
Dative	siddharatnāya	siddharatnābhyām	siddharatnebhyaḥ
Ablative	siddharatnāt	siddharatnābhyām	siddharatnebhyaḥ
Genitive	siddharatnasya	siddharatnayoḥ	siddharatnānām
Locative	siddharatne	siddharatnayoḥ	siddharatneṣu

Compound siddharatna -

Adverb -siddharatnam -siddharatnāt