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
Grey-Black patinated marble base for ball or sphere
Base - support
Madagascar sawyer ammonite - Cleoniceras fern ammonite
Cleoniceras fern ammonite
100 million year old fossil
Madagascar sawyer ammonite - Cleoniceras fern ammonite
Cleoniceras fern ammonite
100 million year old fossil
Clastic Mannequin - Dr. Auzoux's anatomical skinned
Crow on pedestal - Corvus corone
Perfect in a cabinet of curiosities, a masterpiece!
Note that the wooden crosspiece is not exactly centred on the resin base
Manuel complet de Physique et de Météorologie - Complete Manual of Physics and Meteorology
By Ajasson de Grandsagne and L. Fouché
Second edition published in Brussels in 1835
Illustrated with 6 folding plates depicting more than 250 figures. (torn: see photos)
Herbalist's or Pharmacist's jar
Antique blank label of the XVIIIth century
Antique surgical board
From Benjamin Bell's Complete Course in Surgery, published in 1796
Human jaws in porcelain mounted on a blackened wooden base
Anatomical dental model for dentists
19th century
De l'Homme et de la Femme (Of Man and Woman)
By M. de Lignac - Volume 3
Anatomy of procreation - 1779
184: Helleborus orientalis - Lenten Rose
Real framed and calligraphed Herbarium
Naturalist Magnifier: caligo atreus
Cours d'opérations de chirurgie, démontrées au Jardin Royal
Course of surgical operations, demonstrated in the Royal Garden
Published in 1751 in Paris, by d'Houry, sole printer and bookseller to Monseigneur le Duc d'Orléans
Fourth edition
Illustrated with numerous plates and engravings in the text, including the famous plate of Poor Malabou and her scrotal elephantiasis on page 112/113, which the author mentions on page 373.
Entomological box: Beetles Goliathus meleagris from Congo
One with spread wings
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.
Dragon Stone
Septaria egg of Madagascar
It's huge!
Dragon Stone
Septaria egg of Madagascar
