Gold purchase dilemma

My mother's birthday is around and I have been thinking of getting her some gold. I have two choices

  1. Gold coin from MMTC PAMP

  2. BRPL Gold pendant from Amazon

The real dilemma is that BRPL gold is cheaper and surprisingly i am getting cashback on it using my ICICI Amazon card making it an even sweeter deal (BRPL is cheaper by Rs. 908). Should I get the BRPL gold pendant or but the more expensive MMTC coin

It doesn't matter much whether gold is in form of coin or pendant.