How Water Powered the “Mega-Eruption” of Tonga

Editor’s Letter

Let’s Talk! We’ve seen lots of new faces

For Sharpest Vision, LOOK LIKE A TRILOBITE!

While trilobites vanished from Earth 252 million years

The Oldest Land Ecosystem on Earth (and Mars?) Revealed

It is 3.2 billion years old, it lies

Revealing the Roaming of Fred, the Mastodon

An American mastodon (Mammut americanum) nicknamed Fred

A “Fossil Reservoir” Discovered Beneath Antarctic Ice

Photos courtesy to Getty Images As Earth

The High Cost of a Low Metal Lifespan

We humans rely upon metals. They are supremely

Updates from Sister Planet Mars

Recently, Mars has loomed large. Here’s a recap

Citizen Scientists Find Overlooked Asteroids

Photos courtesy to Getty Images We all depend

WARM-OR COLD-BLOODED DINOS? The Debate Continues!

The debate goes back to the 1960s and

Providing the Spark for Early Life

Photos courtesy to Getty Images Per an article

ROCK & GEM READER SURVEY

We want to know about you! Please take

Top 10 Dazzling DRUSY GEMS

Drusy gems are cut from natural mineral specimens

ENHANCED & SYNTHETIC GEMSTONES EXPLAINED

Are They the Real Deal or Fakes & Phonies?

STABLE ENVIRONMENTS: Crystals and Horses

Getty Images / Angelo Gotti /

Celebrating Minerals

This year is the bicentennial of the death

RHODUSITE

Rhodusite, also known as Magnesio-Riecbekite, is a rare

MAKING A NECKLACE PENDANT

Iusually concentrate on making things destined for my

ROCK & GEM FIELD GUIDE Calcite

C alcite( CaCO 3 ) is found in

BUSINESS PROFILE: Mahenge Gems

BRINGS SPINEL TO THE WORLD

CYSTOIDS & CRINOIDS = CURIOUS COUSINS

Cystoids and crinoids are cousins that look alike

ROCK & Soul

Grotto Features Rocks & Gems from Around the World

ROCKS AS EARLY WEAPONS

Understanding the Evolution of Stone Age Weapons

A Life of Fossils: The Collection of Paleo Joe

When Joseph Kchdol was a child growing up

ROSE QUARTZ VS. PINK QUARTZ

Rose quartz ranks high among the most attractive

Show Dates

Giant Selenite Crystals

Bob crawling into the first of two giant

OCO GEODES

ROCKS, MINERALS AND JEWELRY