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crystals

Crystals: The Form
Image: iStockphoto.com/Romko_chuk

Crystals: The Form

The crystal is the go-to shape for most minerals. It is an orderly structure, made of a repeating pattern of atoms that form a distinctive shape.

Perfect large crystals require space to grow and ideal temperature. Explore the relationship between crystals, minerals, and gemstones.

Smithsonian
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Birth of the Oceans: Earth’s First Rocks

Birth of the Oceans: Earth’s First Rocks

In 2002 this researcher discovered the oldest mineral sample ever found on Earth — a zircon crystal 4.38 billion years old. Find out what it reveals about our planet's history. More...

Video
National Geographic
A Rare Glimpse of the Cave of Crystals

A Rare Glimpse of the Cave of Crystals

A true geological wonder, Mexico’s Cave of Crystals contains gigantic natural crystals, some measuring nearly 30-feet long. Watch and be wowed! More...

Video
BBC
Blowing Its Cover: Crystallized Volcanic Rocks Provide a Window into Mount St. Helens’ Plumbing

Blowing Its Cover: Crystallized Volcanic Rocks Provide a Window into Mount St. Helens’ Plumbing

The mineral content of silicate crystals produced in the magma reservoir of Mount Saint Helens give clues to events and conditions in its internal plumbing. Find out how. More...

Article
Scientific American
Cavern of Crystal Giants

Cavern of Crystal Giants

A limestone cavern in Mexico encloses extreme heat and humidity — and enormous crystals. Some longer than 30 feet and several feet thick, the glittering formations could be half a million years old. More...

Article
National Geographic
Eggshell Geode Crystals

Eggshell Geode Crystals

Crack open some eggs to discover how geodes are formed in igneous and sedimentary rock. More...

Activity
Science Bob
Rock Candy Recipe

Rock Candy Recipe

A science experiment you can eat! Make rock candy and watch sugar crystals develop on a large scale. It takes patience, and lots of care with the hot syrup! More...

Activity
Exploratorium
Science Activity: Grow Spikes of Crystals in the Sun!

Science Activity: Grow Spikes of Crystals in the Sun!

Do you tend to do away with plants that you attempt to grow? Then try growing crystals. And if you have a microscope handy, take a closer look! More...

Activity
Exploratorium
Crystal Growth Animations

Crystal Growth Animations

Cool crystals, no waiting! Watch hours turn into seconds in these time-lapse videos of crystal growth. More...

Interactive
McDougal Littell
Crystal Palace Photo Gallery

Crystal Palace Photo Gallery

Join cavers as they descend a thousand feet under Mexico’s Chihuahuan Desert to view some of the planet’s largest crystals. Very high temperatures keep the visits short! More...

Images
National Geographic
Physicists Create Crystals that Are Nearly Alive

Physicists Create Crystals that Are Nearly Alive

Physicists have created crystals that meet some of the criteria for life. Now they’re trying for reproduction. Read all about it. More...

Article
Science Channel
Sci Fi Science: Finding Light Sabre Crystals

Sci Fi Science: Finding Light Sabre Crystals

The Jedi had to travel to a distant world to get crystals to make their light sabers. They didn’t know you could make crystals in the lab. More...

Video
Discovery
Vikings Navigated with Translucent Crystals?

Vikings Navigated with Translucent Crystals?

Could the sunstones mentioned in Icelandic sagas — tales of Viking life — be Icelandic spar crystals? And did the Vikings use them to determine the position of the Sun for navigation? More...

Article
National Geographic

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