I've been asked about the pronounciation of the conjunct jñ .

Coulson writes: 

"jña: the pronounciation of this varies wid is that it is a palatalisation so to speak en bloc of an original gn,  In some places, for instance, it is like gya, in others dnya. . . . The point about jñ is that it is a palatal isation so to speak en bloc of an original gn.. . . . Perhaps the most approprate of the modern pronunciations to adopt is therefore gnya which (by adding y to gn) thus crudely represent a palatalisation."