A History of Indian Medical Literature v4.c63.844

v4.c63.844

396 See on the topaz: E. Balfour (1968): III, 910; A.K. and S. Biswas (1996): 89–90; D. Joshi (1986): 197–198; K. Karttunen (1997): 245; R.N. Saletore (1975): 163–164; B.K. Sarkar (1974): I, 121. Four varieties are distinguished: kauruṇṭaka, kaṣāyaka, padmarāga and indranīla. A.K. and S. Biswas (1996: 79) describe a crimson-yellow ruby called kauruṇṭaka, and a transparent, slightly red and yellow variety, called kaṣāyaka. 351–357 (s.v. corundum).