Please use common sense I am not saying these to be rude but to prevent people critical to my posting to arrive in a negative interpretation.
Gold is Gold any form, shape and size.
Value will not depreciate. no matter form, shape and size.
Therefore why not melt your assumed gold bars. In liquid state it is still gold, value will not depreciate.
By then you can sell it in a any size shape or form taking away suspicion that you found Y-treasure that will compromise the safety of your family and friends. If your friend will do these and can sell it that way I will believe 100%,
Why go to all those testings and measuring etc...etc... while these is the most common sense and primitive way of doing it? Why go to all those hazzles and announce it to everybody you found gold? While miners in Diwalwal can sell their find like these method why can't your friend do it?
Please do not take my why questions, questioning your ability. This is just one way of me to clear your thinking and reasoning. If you will not ask why? then how can you ask How?
Bro I am just making your life easy d not complicate it. Next time do not go posting looking for answer use your ability I know you can do it.
Tell your friend to sell his gold to pawnshop little by little be patient even if it gets 5 years to accumulate enough puhunan (investment) when the money grows apply for mining license then he can sell his gold by kilos and tons.