Dragon Stone
Septaria egg of Madagascar
Septaria Madagascar egg
Also known as Dragon Stone
Septaria is a stone composed of a mixture of yellow calcite and sandstone, found mainly on the island of Madagascar, characterized by highly visible shrinkage cracks. These highly visible cracks, known as Septa, fill with minerals over time.
When the stone is polished, these cracks stand out, giving it a dragon's egg appearance on the outside.
With time, tectonic movements, etc., the nodules can be fractured and new mineral solutions can invade the shrinkage cracks, often calcite.
In our case, Septaria has been polished into an egg shape and the interior has been invaded by a very fine crystallization of calcite. Beautiful crystals.
It's also easy to see why it's called Dragon's Stone: the exterior is very similar to a dragon's egg!
Sold without base
Ref OSM52: Weight: 5kg - Height: 19/20cm
Sold without the base
You can find available bases by typing ball base or egg base in the site search.
High base specially designed to hold a ball or egg
Perfect for ostrich eggs
Not suitable for emu, rhea or swan eggs, for example
Wooden base for ball or sphere - Base - support
Wall decoration of Pompeii - Herculaneum mosaics: Chromolithographic plate
By Wilhelm Zahn
Published between 1832 and 1849
Leaves butterflies under oval glass bell - Kallima Inachus
Bearded dragon - Pogona vitticeps - Bearded agama
Museum jar - Wet specimen
Walrus skull
Odobenus rosmarus
Origin: Canada (British Columbia)
The skull is sold with its CITES import permit as it is a regulated species.
Can't be sold outside the European Union
The skull is simply placed on the base
Flight of butterflies: Heliconius family under glass dome
19th century portable pharmacy - Wooden apothecary cabinet
Travel pharmacy
Madagascar sawyer ammonite - Cleoniceras fern ammonite
Cleoniceras fern ammonite
100 million year old fossil
The Anatomy by Heister
Volume 3 only
Published in 1753
Complete with 7 fold-out plates at the end of the book
Shark tooth fossil
Otodus Obliquus dating from the Ypresian: 50 million years ago
Shark tooth fossil
Otodus Obliquus dating from the Ypresian: 50 million years ago
Plant fossil: Pecopteris Fern - 300 million years old
From the Carboniferous of Lorraine
Entomology bound box
Butterfly: Papilio Antimachus also known as Giant African Swallowtail
The Antimachus is a toxic and enigmatic butterfly
Entomological box
Butterflies: Asian Papilio
Papilio ulysses - Papilio blumei - Papilio maackii
184: Helleborus orientalis - Lenten Rose
Real framed and calligraphed Herbarium
Ball of Lapis-Lazuli from Afghanistan
Ref: Y94
Shark tooth fossil
Otodus Obliquus dating from the Ypresian: 50 million years ago
Dragon Stone
Septaria egg of Madagascar
