The Dark Side of Gold: How Mercury is Poising Our Planet
Behind every shiny gold coin or sparkling diamond necklace lies a sinister secret: the devastating impact of mercury on our environment. For over 70 countries, artisanal and small-scale miners rely on this toxic substance to extract gold from ore, releasing it into the air as vapor that settles in rivers and contaminates the food chain.
The World Health Organization classifies mercury as one of the top ten chemicals of major public health concern, while the United Nations Environment Programme reports that artisanal and small-scale gold mining is the largest source of mercury pollution worldwide. The consequences are staggering: 2,200 tonnes of mercury are released every year, equivalent to nearly 37 percent of human-generated emissions – yet this process produces only about 12-15 percent of the world's primary gold.
Mercury's effects on human health are equally alarming. According to France Armando Cabanillas Vásquez, local coordinator for Pure Earth, "mercury does not stay where it is used - it travels." It evaporates, moves through the soil, and settles in rivers, affecting the entire Amazon ecosystem. Fish ingest contaminated sediments, larger fish eat those smaller fish, and local communities – many of them Indigenous – consume these fish as their primary food source.
Designers like Delphine Leymarie are now using their platforms to highlight the issue. "Mercury is lethal in its subtlety - a silent killer that can take years to reveal its irreversible effects," she said. "We need to create a market for mercury-free gold, so miners have an incentive to make the switch."
As consumers become more aware of the issue, luxury brands are stepping up to support sustainable and responsible mining practices. Certification programs like Fairmined and Fairtrade Gold ensure that gold is extracted under safe, environmentally responsible conditions. The World Gold Council has also announced plans to expand mercury-free processing plants in partnership with local cooperatives.
However, progress remains uneven, and barriers to change include informality, cost, enforcement, education, and market linkage. Mercury itself remains cheap and widely available, despite international trade restrictions. In 2025, the Guardian reported that illicit mercury flows from Asia and Latin America continue to "poison the Amazon," undermining global efforts to curb the trade.
For instance, in Peru's Madre de Dios region, 181 tons of mercury are released annually, contaminating soil samples by more than 100 times the global safety threshold. Local miners like Cabanillas Vásquez face dire consequences: "Mercury use in gold mining isn't a localized problem - it's a global one," he said.
Yet, there is hope on the horizon. Initiatives like planetGOLD aim to formalize tens of thousands of miners and reduce mercury emissions by over 500 tons. Technological innovations, from remote sensing to blockchain-based traceability, will make it easier to monitor compliance and reward ethical production.
As Leymarie said, "We'll know we've succeeded when clean gold becomes the economic norm rather than the ethical exception." The luxury industry has a pivotal role to play in driving this change, using their platforms to promote transparency and impact. When consumers ask where their gold comes from, it should be answered with a story of responsible mining practices, not pollution.
Ultimately, the shift toward mercury-free gold mining represents a rare convergence of environmental science, human rights, and luxury culture. We can create a future where no one needs to ask where their gold comes from - because it will be standard that it's mined responsibly, by people working in safe conditions and with respect for the environment.
Behind every shiny gold coin or sparkling diamond necklace lies a sinister secret: the devastating impact of mercury on our environment. For over 70 countries, artisanal and small-scale miners rely on this toxic substance to extract gold from ore, releasing it into the air as vapor that settles in rivers and contaminates the food chain.
The World Health Organization classifies mercury as one of the top ten chemicals of major public health concern, while the United Nations Environment Programme reports that artisanal and small-scale gold mining is the largest source of mercury pollution worldwide. The consequences are staggering: 2,200 tonnes of mercury are released every year, equivalent to nearly 37 percent of human-generated emissions – yet this process produces only about 12-15 percent of the world's primary gold.
Mercury's effects on human health are equally alarming. According to France Armando Cabanillas Vásquez, local coordinator for Pure Earth, "mercury does not stay where it is used - it travels." It evaporates, moves through the soil, and settles in rivers, affecting the entire Amazon ecosystem. Fish ingest contaminated sediments, larger fish eat those smaller fish, and local communities – many of them Indigenous – consume these fish as their primary food source.
Designers like Delphine Leymarie are now using their platforms to highlight the issue. "Mercury is lethal in its subtlety - a silent killer that can take years to reveal its irreversible effects," she said. "We need to create a market for mercury-free gold, so miners have an incentive to make the switch."
As consumers become more aware of the issue, luxury brands are stepping up to support sustainable and responsible mining practices. Certification programs like Fairmined and Fairtrade Gold ensure that gold is extracted under safe, environmentally responsible conditions. The World Gold Council has also announced plans to expand mercury-free processing plants in partnership with local cooperatives.
However, progress remains uneven, and barriers to change include informality, cost, enforcement, education, and market linkage. Mercury itself remains cheap and widely available, despite international trade restrictions. In 2025, the Guardian reported that illicit mercury flows from Asia and Latin America continue to "poison the Amazon," undermining global efforts to curb the trade.
For instance, in Peru's Madre de Dios region, 181 tons of mercury are released annually, contaminating soil samples by more than 100 times the global safety threshold. Local miners like Cabanillas Vásquez face dire consequences: "Mercury use in gold mining isn't a localized problem - it's a global one," he said.
Yet, there is hope on the horizon. Initiatives like planetGOLD aim to formalize tens of thousands of miners and reduce mercury emissions by over 500 tons. Technological innovations, from remote sensing to blockchain-based traceability, will make it easier to monitor compliance and reward ethical production.
As Leymarie said, "We'll know we've succeeded when clean gold becomes the economic norm rather than the ethical exception." The luxury industry has a pivotal role to play in driving this change, using their platforms to promote transparency and impact. When consumers ask where their gold comes from, it should be answered with a story of responsible mining practices, not pollution.
Ultimately, the shift toward mercury-free gold mining represents a rare convergence of environmental science, human rights, and luxury culture. We can create a future where no one needs to ask where their gold comes from - because it will be standard that it's mined responsibly, by people working in safe conditions and with respect for the environment.