Declension table of ?vajratva

Neuter	Singular	Dual	Plural
Nominative	vajratvam	vajratve	vajratvāni
Vocative	vajratva	vajratve	vajratvāni
Accusative	vajratvam	vajratve	vajratvāni
Instrumental	vajratvena	vajratvābhyām	vajratvaiḥ
Dative	vajratvāya	vajratvābhyām	vajratvebhyaḥ
Ablative	vajratvāt	vajratvābhyām	vajratvebhyaḥ
Genitive	vajratvasya	vajratvayoḥ	vajratvānām
Locative	vajratve	vajratvayoḥ	vajratveṣu

Compound vajratva -

Adverb -vajratvam -vajratvāt