[gabbahh]

This is really long term..
Diamonds and other precious gems. Alrealy it is becoming more and more dificult to extract them from mother Earth. In 20 or 30 years most mines will be depleted...
Property on the coastline of India. India is becoming more and more wealthy, and those people also like to go to the beaches. The price of property is still really low (about 1 dollar for a square yard).