Septarian "Dragon’s Egg" from Madagascar with Crystal Cavity

A Jurassic Treasure Cracked Open by Time

This striking Septarian “Dragon’s Egg” from Ambondromamy in the Betsiboka Region of Madagascar is a powerful statement piece, both sculptural and deeply ancient. Polished into a classic egg shape and partially opened to reveal a sparkling crystal cavity, it beautifully showcases the dramatic contrast between smooth stone and glittering crystalline textures within. Weighing 1962 grams and measuring approximately 142mm high, 122mm wide and 115mm deep, this is a substantial, eye-catching display specimen that commands attention.

Septarian is a unique geological formation made up of ancient mudstone or limestone that cracked and shrank millions of years ago. Over time, these cracks were filled with minerals—most commonly calcite, aragonite, and limestone—creating the distinctive network of dark lines and patterns that give Septarian its instantly recognisable look. The name “Septarian” comes from the Latin septum, meaning “partition,” referring to these natural divisions within the stone.

Specimens from this region of Madagascar date back to the Middle to Late Jurassic period, making them approximately 145 to 174 million years old—formed at a time when dinosaurs still roamed the Earth and Madagascar was part of the ancient supercontinent Gondwana.

Whether you’re a serious collector or simply looking for a bold, natural statement piece, this Dragon’s Egg is perfect for a display cabinet, desk, or living space. ✨ Add this remarkable piece of Earth’s history to your collection—or let it become a dramatic and conversation-starting feature in your home décor today.