Minerals
Simulation Suggests Viking Sunstones of Legend Could Have Worked
If they existed, the crystals—used to locate the sun's position on cloudy days—could have helped Vikings sail to far away places
Never-Before-Seen Mineral Found Inside a Diamond
The diamond acted as a container, keeping a piece of calcium silicate perovskite stable as it moved towards the Earth’s surface
World's Fifth-Largest Diamond Found in Lesotho
The 910-carat gem is a D-color, type-IIa stone, meaning it is completely colorless and has no visible impurities
Do Other Animals Cry and More Questions From Our Readers
You asked, we answered
Dine 21 Stories Underground in This 345-Million-Year-Old Cavern
Cavern Grotto, a new restaurant in Arizona, opens inside the largest dry cavern system in the country
Big Data (and You) Could Help Find 1,500 Undiscovered Minerals
Researchers are using new tools to predict where to find new minerals as well as to locate new sources of valuable resources like copper
Step Inside This Underground Cathedral, Carved Into the Walls of an Abandoned Salt Mine
An old mine has transformed into a subterranean worship space, 650 feet underground
Finders, Keepers: Five of the Best Places to Go Gem Hunting in the U.S.
From diamonds to emeralds, the United States is full of buried bling
Will Luxembourg Lead the Race for Space Mining?
The tiny nation announced its private industry partners for asteroid mining
Life and Rocks May Have Co-Evolved on Earth
A Carnegie geologist makes the case that minerals have evolved over time and may have helped spark life
We Are Missing At Least 145 Carbon-Bearing Minerals, and You Can Help Find Them
The Carbon Mineral Challenge is asking rock enthusiasts around the world to hunt for the undiscovered forms of this common element
Get Your Pickaxe and Spacecraft Ready, Space Mining Might be Legal Very Soon
The new Space Act would open up the potentially lucrative field of asteroid mining
Why Are People Still Using Asbestos?
The story holds parallels with that of the tobacco industry
Peering Into Some of the World's Largest Mines
This interactive map will show you the sources of the planet's precious metals
The Most Abundant Mineral in the World Finally Gets a Name
It's so far underground, you've probably never heard of it
These Teenagers Have Already Accomplished More Than You Ever Will
The winners of this year's Intel Science Talent Search take on flu vaccines, stem cells and tools for diagnosing cancer
The Hope Diamond Was Once a Symbol for Louis XIV, the Sun King
New research indicates that the stone was once specially cut to produce an image of a sun when mounted on a gold background
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