What’s the true cost of a corporate-mined diamond?

It’s an uncomfortable question. No one wants to carry the guilt of the landscapes, habitats, and wildlife whose destruction is not tabulated on your tennis bracelet’s receipt. The easiest coping mechanism is to ignore the question – just shrug it off because “it’s not my problem.” Or, shrug it off because “there’s nothing I can do about it.”

Fortunately, unlike our parents’ generation, our generation has a choice. We can choose the source of our diamonds. We can ask the tough questions about corporate-mined diamonds because we have options. We don’t need to shrug-off the true cost of corporate-mined diamonds because we can choose to purchase diamonds extracted from the Earth or forged by American workers and American ingenuity.

Forget the guilt for a moment. What’s the true cost of a corporate-mined diamond? If you do a little digging, there’s a gold mine of information available. Or ask an astronaut, because they can literally see open-pit corporate mines from space.

Here’s a primer to get you started.

Environmental Impact, Earth Displacement

The most visible impact of mining is the sheer amount of rock and dirt that is moved to reach the diamonds deep in the ground.

Miners don’t mine on lifeless wastelands.

They mine where they think the diamonds are. Whatever people, animals, and ecosystems lived there before don’t live there after the miners get started.

Environmental Impact, Earth Displacement, The average stone in an engagement ring is the product of the removal of 200 to 400 million times its volume of earth. (US Geological Survey)
Environmental Impact, Earth Displacement, The richest diamond mines in Africa produce 1 part diamond to 40 million parts waste rock. (US Geological Survey)

Mined-diamond jewelers often claim that diamonds from Canada are less irresponsible than those from Africa because they don’t involve child soldiers and exploitative labor practices. That would be true if not for two inconvenient facts.

Environmental Impact, Earth Displacement, The Diavik diamond mine in Canada is so large that it can be seen from space. (Quartz)
1. Diamonds are tradeable

Diamond traders ship stones all over the world in a competitive market. Whatever dollars you spend on a Canadian diamond prop-up the market for African diamonds. Canadian stones with equal size, cut, color and clarity are being sold for a premium price just because they’re from Canada.

2. Canada isn't better

Every day, Canadian mines produce one million tons of waste rock and 950,000 tons of tailings, which are finely ground rocks and minerals from processing extracted materials like diamonds. 1

Environmental Impact, Acid Rock Drainage

All of the waste rock and tailings have to be stored somewhere.

Environmental Impact, Acid Rock Drainage, “Once acid mine drainage has started, it cannot be stopped. The process can literally go on for thousands of years.” (MiningWatch Canada)

Storage is a highly generous term for the process of stacking massive piles of waste rock on land and dumping massive quantities of tailings and processing chemicals into “tailings ponds.” 2

These byproducts of mining create chemical reactions that produce acidic water which dissolves lead, copper and zinc. It’s bad news for the whole food chain when this toxic concoction leaches into the groundwater and contaminates the living things that depend on it. 3

In northern Canada, this waste is stored in frozen dams. It sounds like a good idea, but unfortunately Arctic latitudes are warming at three times the rate of the rest of the world, melting ice and the permafrost that keeps such waste contained. 4 As the frozen ground thaws more each summer, acid rock drainage could result in a massive leaching of heavy metals into the soil and water sources. A National Round Table on the Environment and the Economy report concisely summarized the impacts of mining excrement as "environmentally and socially disastrous, causing irreversible degradation of sensitive habitat and human health impacts." 5

Environmental Impact, Habitat Destruction
Environmental Impact, Habitat Destruction, In Namaqualand, a full 65% of the coastline has been mined for diamonds. (WWF)

The removal of millions of tons of rock, and the contamination of water supplies have far-reaching effects on wildlife habitats surrounding diamond mines. In Zimbabwe, waste from diamond mine tailings has polluted the Odzi and Save rivers, where animals who drink from the river lose their fur and die. 6 In Namaqualand, a region in South Africa and Namibia, a full 65% of the coastline has been mined for diamonds. 7 This coastline is home to coastal bird species and endemic flowers, animals and insects.

Back in northern Canada, herds of caribou and muskoxen roam through the regions where diamond mine waste is stored. Native people fear that the animals will eat vegetation that grows near tailings ponds—which could introduce toxic heavy metals into the food chain. 8

Environmental Impact, Ocean Mining

Habitats on land aren’t the only ones in danger.

Environmental Impact, Ocean Mining, One marine diamond mining vessel will scour 2,300 square miles of ocean floor. (Bloomberg)

New technology allows diamond companies to target new reserves of diamonds under the ocean floor. The new frontier of diamond mining is a dirty business. Marine mining operations dredge up the sea floor, sift through the sledge, and spits it back into the water. In total, more than 579,000 square miles of seafloor is currently leased to private companies or nations for exploratory ocean diamond mining. 9 That’s about the surface area of California, Florida, Colorado, Pennsylvania, Virginia, Ohio, West Virginia, New Jersey, Illinois and Wisconsin – combined!

Environmental Impact, Energy Usage

Moving these massive quantities of earth
takes an enormous amount of energy.

Environmental Impact, Energy Usage, CO2 emissions from diamond mining = 1.5 million vehicles running for a full year. (Better Diamond Initiative)
Environmental Impact, Energy Usage, Electricity used to mined diamonds could power 1 million U.S. households for a year. (Better Diamond Initiative)

In 2012, the heat-trapping CO2 emissions from diamond mining were equivalent to about 1.5 million cars on the road. Americans use more electricity per household than any other country on Earth, and diamond mining uses enough electricity to power 1 million U.S. households. 10 The sad irony is that these emissions accelerate the melting of Canada’s frozen waste deposits.

Environmental Impact, Gold Mines
Environmental Impact, Gold Mines, A typical gold wedding band creates 20 tons of ore and waste rock. (Washington Post)

We use recycled gold

because mining for gold is also destructive. Nearly 75% of active gold mines and exploration sites occupy regions defined as “high conservation value.” 11 These sites are often in low-income countries with weak or non-existent environmental regulations.

Environmental Impact, Ongoing Threats

Once a mine is exhausted or abandoned, the devastation remains.

Environmental Impact, There are 10,000 abandoned mines in Canada alone.

Though rich countries sometimes try to minimize the lasting damage of dead mines, even in Canada there are 10,000 abandoned mines. 12 In South Africa, there are 6,000. 13 Around the world, billions of tons of tailings and waste rock are leaching contamination into surrounding ecosystems and affecting the health and wellbeing of the people and wildlife unfortunate enough to live nearby.


Diamonds are traditionally given as a gift of love. They last forever. Unfortunately, the destruction from their extraction also last forever.

Ivory is beautiful, but we’ve decided as a global community of nations that ivory is not worth the elephants who must die to harvest it. Diamonds are beautiful, but are they worth the ecosystems that must die to extract them? Governments aren’t doing much about it. You can do something about it.

we’re here to help.