A gold nugget is seen on an electronic scale balance in a miners' camp near Mahdia in Guyana November 9, 2011. Gold teeth glisten through clouds of marijuana in a bar deep in the Amazon where wildcat miners lured by the soaring price of gold have come to seek their fortunes under the jungle soil. Yet many are instead finding misery. The gold rush has spurred a wave of killings and violent assaults in this lawless backwater of Guyana, a former British colony on the northern coast of South America. Such stories have become increasingly familiar in isolated parts of the Amazon as the price of gold has doubled in the last three years as investors looked for safe-havens given weak growth and growing debt problems in Europe and the United States. Picture taken November 9, 2011. REUTERS/Girish Gupta (GUYANA - Tags: BUSINESS COMMODITIES)