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Why Lapis Lazuli Was More Expensive Than Gold in the Renaissance
In the Renaissance, this blue was worth more than gold: ultramarine, made from lapis lazuli found in only one place on Earth.
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Why are there such beautiful minerals in Brazil?
Brazil doesn't have one secret for beautiful gems. It has three. Billion-year-old rock, volcanoes that buried half the country in lava, and stones that transform from the inside without ever melting.
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How should I take care of my mineral?
We'll explain how to take care of your mineral so it lasts forever.
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Not all minerals are gems, and not all gems are minerals
In this post, we explain the difference between a gem and a mineral
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Mysteries of moonstone's blue sheen
It's not magic, it's physics. That glow that seems to "float" in moonstone is called adularescence.
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What are aqua aura type minerals
Aqua aura quartz takes centuries to form... and only minutes to change colour. We tell you what's behind its shimmering reflections.
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The stone that guided the Vikings across the sea
No compass, no GPS, no direct view of the sun. Just a transparent crystal that revealed its position.
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Obsidian in pre-Columbian culture
Obsidian isn't a mineral, but a volcanic glass that Mesoamerican cultures turned into a tool, weapon, ritual mirror and symbol of status.
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Moon Minerals
Discover Moon minerals: from Apollo 11 lunar basalt to meteorites that fell on Earth.
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Fossilized Ammonites: The Spiral That Survived Time
Discover what fossils are, how ammonites form, and why some shine with iridescent colors. Featuring specimens from Madagascar.
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