There is no benefit of emeralde at all.
Even the few benefits they had was for amex variant, which as I last know, is not being issued.
Only lounge access is something that they provide.
Even for airport spa, only 4 are operating in India, so even that might not make any sense.
its better to take paid magnus which gives atleast equivalent tata cliq gc and relatively better rewards even if you dont cross 1L every month. Or sc ultimate