4.2" Septarian "Dragon Egg" Geode - Sparkly Black Crystals

About Septarian "Dragon Eggs"

These septarian “dragon egg” geodes from Madagascar look like they could have been plucked straight from the lair of Drogon or Rhaegal. Split and polished to reveal their fiery interiors, each egg displays molten-gold calcite crystals framed by dark, scale-like septarian veins—an aesthetic so striking it feels forged rather than formed. No two are alike; each one has its own crackled pattern, glowing chambers, and volcanic character, making them perfect display pieces for collectors, fantasy fans, or anyone who wants a touch of Westeros on their shelf.

Septarian nodules formed tens of millions of years ago when shrinking mudballs fractured and were later filled with minerals like calcite, aragonite, and limestone. The result is the natural “dragon-scale” pattern that makes them so recognizable and so popular. Madagascar’s deposits are particularly prized for their bold contrast and vibrant golden interiors, and when polished into egg shapes they become some of the most dramatic and decorative septarian pieces available—equal parts geology, artistry, and myth.