Western Australia has a growing international reputation as a major source of pink and other coloured diamonds, as well as beryl, topaz, tourmaline and gem-quality quartz.
A study comparing the perception of industries concluded that banking, mining, the media and power companies are the sectors people don't trust to act in the public interest.
Artisanal gold mining, the largest source of global mercury pollution in small-scale operations, is the only source of income for as many as 15 million people in 70 countries, mostly poor ones.
