glittering gold pagodas line the mighty irrawaddy.old, tropical wood, and jade, myanmar is rich in natural resources. mandalay is a hub of the jade trade. thant sin has made a fortune with the near-translucent green stones. he trades mainly in large stones. the jade trade is lucrative. $31 billion worth of jade is mined in myanmar every year. one kilogram alone of the finest jade can fetch millions. thant sin shows off his giant stones. most of his clients are chinese. >> the chinese think that jade is good for your health, that it has a cooling effect. a stone like this can be unbelievably expensive. the more translucent it is, the higher its price. reporter: but the human cost of jade is even higher. many of the mine workers end up with drug habits, opium, heroin, crystal meth. these men have been forced to go cold turkey. >> we thought the drugs would protect us against malaria. i kept taking more and more. i ended up in hospital. i couldn't get off them. reporter: christian aid organizations are trying to fight the drug epidemic i