[Pramāṇa](https://indike.org/pramana/) › [Indian literature](https://indike.org/pramana/in) › [Philosophy](https://indike.org/pramana/in.darsana) › [Logic and epistemology](https://indike.org/pramana/in.darsana.nyaya) › Nyayaratna # Nyayaratna (Nyāyaratna) न्यायरत्न Pre-Gaṅgeśa treatise on inference and invariable concomitance. - **Language:** Sanskrit - **Date:** 1275–1325 CE - **Author:** [Maṇikaṇṭha Miśra](https://indike.org/pramana/person/manikantha-misra) - **Place:** Mithilā - **Text:** not yet digitised (catalogue entry) ## Commentaries (4) - [Prakāśa of Vācaspati Miśra](https://indike.org/pramana/in.darsana.nyaya.nyayaratna!vacaspati-misra) — Vācaspatimiśra (Maithila smārta), Sanskrit, not yet digitised - [Dyutimālikā](https://indike.org/pramana/in.darsana.nyaya.nyayaratna!nrsimha-yajvan) — Nṛsiṃha Yajvan, Sanskrit, not yet digitised - [Mañjarī](https://indike.org/pramana/in.darsana.nyaya.nyayaratna!rajasekhara) — Rājaśekhara, Sanskrit, not yet digitised - [Nyāyaratnaṭīkā](https://indike.org/pramana/in.darsana.nyaya.nyayaratna!vacaspatimisra) — Vācaspatimiśra, Sanskrit, not yet digitised --- Source: [https://indike.org/pramana/in.darsana.nyaya.nyayaratna](https://indike.org/pramana/in.darsana.nyaya.nyayaratna) · Pramāṇa