What is the Black Stone of Mecca? What is the type of Black Stone?

What is the Black Stone of Mecca? What is the type...

Plate Tectonics

What is Plate Tectonics?

Where Do Rubies Come From?

Geyser Opal "Spencer Opal"

Geyser Opal “Spencer Opal”: What is Geyser Opal? How it Formed?

Types of Gemstone

Emerald

Where to find Emerald Crystals in the United States?

A Trapiche emerald from Muzo Mine, Colombia. Credit: Luciana Barbosa/Wikipedia

Trapiche Emerald : What is a Trapiche Emerald? How Does a...

The Virgin Rainbow opal from the South Australian Museum opal exhibition. Credit: South Australian Museum.

Virgin Rainbow “The most beautiful opal in the world”

How to Identify Minerals?

plate boundaries

What are the different types of plate tectonic boundaries?

What Is a Geologic Fault?

Rhodium: The Most Expensive Metal

Rhodium: The Most Expensive Metal

Petroleum Traps

Mohs Hardness Scale

Peacock rock

Peacock rock : What is Peacock rock? Where is peacock rock...

Geological Folds

Meganeura

Meganeura : The largest insect ever existed was a giant dragonfly

Canyonlands National Park, USA

Top Ten Spectacular Geological Sites in the USA

Ol Doinyo Lengai volcano spews extremely runny lava that turns bone white when it dries. (Image credit: Jean-Denis JOUBERT via Getty Images)

Mountain of God: The Weirdest Volcano in the World

Exceptional and very rare Oregon opals with precious color play.

Opals in Oregon : Where to Find Opals in Oregon?

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