admin

Discover aragonite, the shape-shifting mineral that builds seashells, preserves ammonites, forms gems, and records Earth’s ancient oceans.

Explore stromatolites—layered fossils built by microbes that transformed Earth’s oceans and atmosphere and preserve the earliest evidence of life.

Obsidian is frozen lava turned to glass, prized by ancient civilizations and collectors today. Learn how it forms and how to detect fake obsidian in the market.

Amethyst explained: formation, color, geodes, famous localities, and the history behind the world’s most famous purple quartz.

Most citrine for sale started as amethyst. Discover why natural citrine is scarce and the visual clues that reveal heat-treated quartz sold as citrine.

Rose quartz is a quartz variety colored by microscopic silicate inclusions. Learn its geologic formation, global deposits, history, optical properties, and how it differs from pink quartz.

New research reveals the cool-water, million-year journey behind Uruguay’s giant amethyst geodes. Explore their formation in basalt cavities and the thriving Artigas mining industry that brings cathedral amethyst to the world.

Learn how citrine forms, why natural citrine is rare, its history, properties, and how to spot heat-treated amethyst sold as citrine.

Discover pyrite’s many crystal forms, geological significance, role in iron and sulfur cycles, and its use through history.

Ever wanted to own a real, fossil tooth from a Megalodon shark? This buyers guide help you decide what to buy.