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 OSM55: 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
display for ball or egg (small)
Material: Resin material
display for crystal ball or ostrich egg
Not suitable for emu or swan eggs.
Wooden base for ball or sphere - Base - support
Grey-Black patinated marble base for ball or sphere
Base - support
Antique surgical board
From Benjamin Bell's Complete Course in Surgery, published in 1796
Deer antler sculpture - Totem with 3 octopuses on pedestal
Material : Antler
Origin: Indonesia
Entomological shattering at La Beauchêne under glass case
Chrysochroa buqueti - the jewel beetle
The red speckled jewel beetle
By La Thanatothèque
Ex-Voto heart in clay by Cuore di Argilla - Zodiac
Italy crafts
A contemporary reinterpretation of the traditional ex-voto, originally a votive offering made to a god in request of a grace or in thanks for a grace obtained after a vow.
There remains Sagittarius
Octopus Tentacle Diaphanisation - Octopus vulgaris
Biological preparation
The purpose of diaphanisation is to make fabrics transparent. The fabrics are made transparent using a chemical process, and specific dyes are used.
The flesh is made transparent and the dyes attach themselves to the skin
All tentacles are different: illustrative photos
Flight of Morpho menelaus butterflies under a Napoleon III-style cloche
Superb butterflies in an impressive electric blue
Antique surgical board
From Benjamin Bell's Complete Course in Surgery, published in 1796
Dragon Stone
Septaria egg of Madagascar
It's huge!
Human jaws in porcelain mounted on a blackened wooden base
Anatomical dental model for dentists
19th century
Entomological box
Composition with 20 Butterflies
Dimensions: 39x26cm
Box hand-bound by a craftsman bookbinder in Anjou
Le corps de l'Homme
Anatomical colour plates with cut-out superimposed leaves
By Edmond Perrier - Schleicher Frères & Cie Editeurs
No date, circa 1900
Antique Laundry blue box - Helvetia Blue from Talissot & Chevalier in Dôle and Geneva
Period: 1890-1905
Box containing 6 gold-plated “coins” made of blue wash, resembling the iconography of Swiss coins and medals from the late 19th and early 20th centuries.
Beautiful blue and gold illustration on the box.
Your box will be sealed: never opened in 120 years
Australian saltwater crocodile skull: Crocodylus porosus
Estuary crocodile
With its CITES permit
30cm
Can only be sold in the European Union- Shengen Area
Entomological frame - Scarab Goliathus meleagris female with spread wings
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.
Dragon Stone
Septaria egg of Madagascar
