Dragon Stone
Septaria egg of Madagascar
It's huge!
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 OSM46: Weight: 7.1kg - Height: 23cm average It's huge!
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
Grey-Black patinated marble base for ball or sphere
Base - support
Man - Anatomical chart that can be disassembled
By Fernand Nathan Editeur publisher
Coloured chart with movable, cut-out and superimposed leaves
There are defects on the superimposed boards; the outer board, which was the man's torso, is missing, as are the lungs, which were above the heart. The left hand is missing, the arm being torn.
Naturalist Magnifier: caligo atreus
Dragon Stone
Septaria egg of Madagascar
Entomological shattering at La Beauchêne under glass case
Chrysochroa buqueti - the jewel beetle
The red speckled jewel beetle
By La Thanatothèque
Antique surgical board
From Benjamin Bell's Complete Course in Surgery, published in 1796
Dragon Stone
Septaria egg of Madagascar
Le corps de l'Homme
Anatomical colour plates with cut-out superimposed leaves
By Edmond Perrier - Schleicher Frères & Cie Editeurs
No date, circa 1900
The Skeleton Virgin
Large candle: 40cm high
In soy wax
Butterfly - Natural History color plate
Entomology
You buy 1 plate, not the whole set
Flame gorgon - Red Whip Coral on pedestal - Ellisella grandis from Indonesia
Herbalist's or Pharmacist's jar
Antique blank label of the XVIIIth century
Anatomical chart by Paulet and Sarazin
From the Traité d'anatomie topographique (Treatise on topographical anatomy)
Published in 1867-1870
Chromolithography
You buy 1 plate, not the whole set
Shark tooth fossil
Otodus Obliquus dating from the Ypresian: 50 million years ago
Antique bezoar - Antipoison - Antidote
Once sold by the apothecary, bezoar, also known as gallstone, was reputed to have the same anti-poison properties as the legendary unicorn's horn, hence its excessively high price, also due to its great rarity.
An important piece in a cabinet of curiosities
Sold alone - Without stand, sold separately
Dragon Stone
Septaria egg of Madagascar
It's huge!
