Declension table of ?siddharatna

Masculine	Singular	Dual	Plural
Nominative	siddharatnaḥ	siddharatnau	siddharatnāḥ
Vocative	siddharatna	siddharatnau	siddharatnāḥ
Accusative	siddharatnam	siddharatnau	siddharatnān
Instrumental	siddharatnena	siddharatnābhyām	siddharatnaiḥ siddharatnebhiḥ
Dative	siddharatnāya	siddharatnābhyām	siddharatnebhyaḥ
Ablative	siddharatnāt	siddharatnābhyām	siddharatnebhyaḥ
Genitive	siddharatnasya	siddharatnayoḥ	siddharatnānām
Locative	siddharatne	siddharatnayoḥ	siddharatneṣu

Compound siddharatna -

Adverb -siddharatnam -siddharatnāt