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 OSM48: Weight: 4.1kg - Height: 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
Dragon Stone
Septaria egg of Madagascar
Entomological frame
Scarab Goliathus meleagris male with spread wings
Shark tooth fossil
Otodus Obliquus dating from the Ypresian: 50 million years ago
Papuan engraved horse bone dagger
Papuan handicraft
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
Diaphanization of Common mouse - Mus musculus
Biological preparation
The aim of diaphanization is to render the tissues transparent through a chemical process, and specific dyes are used to highlight the skeleton.
You can see the bones through the flesh!
Entomological composition of beetles
27 specimens make up this picture
Black entomological box with gold fillet, hand-crafted by an bookbinder craftsman in Anjou
Antique study mask by Simonne Laubé, circa 1930
Anatomical skin
In vulcanized and painted rubber
Inspired by the famous death mask from L'Inconnue de la Seine
Megalodon tooth fossil - Otodus megalodon
12.6cm
Indonesia
Fossil shark tooth
Entomology bound box
Butterfly: Papilio Antimachus also known as Giant African Swallowtail
The Antimachus is a toxic and enigmatic butterfly
Madagascar sawyer ammonite - Cleoniceras fern ammonite
Cleoniceras fern ammonite
100 million year old fossil
Human skull - Replica by artist Jérôme Cavailles
Ref: Août 19
Mosasaur jaw fossil still in its gangue
65 Million Years
Anatomic lithography: "Traité complet de l'Anatomie de l'Homme"
by Dr Bourgery and draughtsman Jacob
Volume 3 - 1844
Antique surgical board
From Benjamin Bell's Complete Course in Surgery, published in 1796
Dragon Stone
Septaria egg of Madagascar
