google0d7a82c6c6fc070d.html

Ammonites

What are ammonites? Ammonites are fossils of squid-like mollusks. They lived in the oceans between the Devonian period (± 400 million years ago) and the Mesozoic period (± 65 million years ago). Especially during the Jurassic and Cretaceous periods – ±200...

Amethysts

Amethysts are perhaps the best known and best valued minerals in the world. With their light purple to deep violet color, they impress many people. Their captivating colors comes from traces of iron in the quartz. Typically manifesting in hexagonal crystals, amethyst...