Rough Diamond
The hardest natural material, fresh from deep underground
Geology & Minerals
Rocks, crystals, faults, and formations that reveal the restless forces shaping the planet beneath our feet.
Quartz Crystal
The most common mineral in the Earth's continental crust
Obsidian Blade
Volcanic glass sharper than a steel scalpel
Granite Block
The workhorse rock beneath continents and inside monuments
Amethyst Geode
A hollow rock hiding a purple crystal cathedral inside
Hoba Meteorite
The largest known meteorite still lying where it fell
Giant Crystal of Naica
A selenite beam longer than a school bus
San Andreas Fault
The 1,200 km crack running through California
Mid-Atlantic Ridge
The longest mountain range on Earth, hidden underwater
Earth's Inner Core
A solid iron ball as hot as the surface of the Sun
Giant's Causeway Column
A hexagonal basalt pillar carved by cooling lava
Pumice Stone
The only rock that floats on water
Fool's Gold Nugget
Iron pyrite, the mineral that fooled countless prospectors
Petrified Wood Log
An ancient tree turned to stone, cell by cell
Delicate Arch
A freestanding sandstone arch shaped by wind and water