Uncover the differences between rocks, minerals, and gemstones, discover how they are all formed, and explore examples from each category.

Giant’s Causeway in Northern Ireland is a fascinating geological wonder whose creation originates both in geology and Irish mythology. From a geological perspective, Giants Causeway in Ireland was formed by ancient lava that moulded the hexagonal basalt columns at the site. From a mythological perspective, Giants Causeway was created by the ancient giant Finn McCool (Fionn MacCumhaill) as a bridge to Scotland’s Isle of Staffa, where his rival, a Scottish giant named Benandonn

The Naica Cave of Crystals, home to giant selenite crystals, is one of the most fascinating, yet potentially deadly, places on Earth.