Things may not be as worse as gold plated instead of gold, but you
may end up in buying 18-19kt jewellery paying for 22kt jewellery, if
you buy from local small jewellers. Hence, it is better you buy gold
from any of the reputed jewellers.
As such, Tanishq is the largest jewellery retailer in India with
chain of stores (around 80 stores) all around the country, from the
house of TATA. There is a karatmeter to test the purity of Gold in
most of the Tanishq show rooms where you can do a non-destructive
purity testing to ensure the gold purity.
There are three Tanishq stores in Bangalore - one in Dickenson Road,
one in Jayanagar and the third one is in Malleswaram. You can look at
www.tanishq.in for the address details and the details about the
brand / company.
Please see if this is of any use to you.