Doctor Sun says less refined grains have more nutritional value than refined grains.

VOA: special.2010.06.30

The three grammes of copper in the 1 rupee coin (we are talking about the older style, the Jinnah on one side, Badshahi Masjid on the other, a brown colour, not the newer silvery looking coin) therefore has a refined value of 2.64 US cents.

FORBES: The Pakistani 1 Rupee Coin Is Worth More Than 1 Rs

These are rough estimates, and there is a wide gap between the value of refined metal and the value of buried ore.

FORBES: The Promoter

These are very rough estimates, and in any event there is of course a wide gap between the value of refined metal and the value of buried ore.

FORBES: The Promoter