Gold Jewellery as an Investment???
Single word answer: Never!
If you're buying jewels for wearing, for enjoying, for showing off, for snob value, for fun, for pledging in an emergency, it is OK. It is your call, it is your decision.
However, if you believe that Gold is a good investment, make sure that you are buying Gold ETFs and never buy physical gold.
Don't delude yourself that physical gold jewellery is a good financial investment.
If you've got any doubts whatsoever, take a look at this wonderful 7-minute video: