Ratna vijñāna
By: Sūryanārāyaṇa Vyāsa, Rājaśekhara Vyāsa.
Contributors: Vyāsa, Rājaśekhara.; Ṭhakkura Pherū, fl. 1291-1323.
Edition: Saṃskaraṇa 1.
Publisher: Jñāna Gaṅgā
Published: 1988
Place of publication: Dillī
Language: hin
Number of pages: 196
Subjects: Precious stones -- India.; Gem cutting -- India.; Jewelry making.
Other titles: Ratna vigyan. 
Description: On gemmology. 
Notes: In Hindi; includes quotations in Prakrit and Sanskrit.
Title on t.p. verso: Ratna vigyan.
"Ratna-parīkshā" / Ṭhakkura Pherū viracitā Prākr̥tabhāṣābaddhā: p. [137]-159.