Yes. Diamonds are classified as mineral resources.
They’re natural crystals made entirely of carbon—one of the few minerals that’s just a single element. Confirmed by the USGS, diamonds score a 10 on the Mohs hardness scale, making them the hardest known substance on Earth. They also hold the record for highest thermal conductivity of any natural material.
Where are diamonds found geographically?
Diamonds aren’t picky about location. They’re mined on every continent except Antarctica. These crystals form deep underground—140 to 190 kilometers down—then hitch a ride to the surface via rare, violent volcanic eruptions called kimberlite and lamproite pipes. These pipes cluster in ancient continental cores called cratons, turning ordinary rock into treasure. Over millions of years, rivers and glaciers can scatter diamonds far and wide, which explains why they turn up in places like Namibia’s deserts and Russia’s Arctic tundra.
What are the key properties of diamonds?
How are diamonds classified in mineralogy?
Diamonds fall under the “native elements” category. That’s mineral-speak for substances made of a single element in its pure form—carbon, in this case. The atoms are arranged in such a tight crystal lattice that nothing can scratch them except another diamond. That’s why jewelers use diamond powder to polish other diamonds. The native elements group includes metals like gold and platinum, but carbon in diamond form is a nonmetal. Fun fact: diamonds aren’t the only carbon polymorph—graphite, the stuff in pencils, is pure carbon too, but arranged in loose sheets that flake apart. Diamonds, meanwhile, are like carbon skyscrapers: strong, rigid, and immovable.
Most natural diamonds are between 1 billion and 3.5 billion years old—older than most life on Earth. They formed under pressures and temperatures hotter than the Sun’s surface, only reaching us via explosive eruptions millions of years ago. Today, labs can grow synthetic diamonds in weeks using chemical vapor deposition, stacking carbon atoms into crystal layers. The synthetic diamond industry was worth over $15 billion as of 2026.
Where can you see diamonds in the wild?
If you want to spot diamonds where they naturally occur, look for exposed kimberlite pipes. These eroded volcanic formations sometimes offer guided tours into old mine workings. Two spots worth visiting: the Kimberley region in Western Australia (–16.7395° S, 125.3116° E) and South Africa’s Cullinan Mine (25.6833° S, 28.3333° E). Prospectors in the 19th century struck it rich in these places.
In 2026, a polished 1-carat diamond averaged about $6,500 on the global market. Lab-grown stones, however, sell for 60–80% less. If you’re buying, always check the GIA certificate—it’s the industry standard for grading clarity, color, and carat weight. Just remember: diamonds are tough, but they can chip or crack if hit at the right angle, so store them separately from other jewelry.
Edited and fact-checked by the MeridianFacts editorial team.
