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
Memento Mori sculpted from a deck of cards - Poker
Size M
BLUE color
Leaves butterflies under oval glass bell - Kallima Inachus
Vertebra of Giraffe
Giraffa camelopardalis
With its CITES license
Not for sale outside the European Union
You are buying 1 vertebra
Ebonite cannula tip
Tips for enema or medical irrigation cannulas. New Old Stock
Marketed between May 1939 and sometime in 1940
Ebonite and glass laryngeal syringe
For intra-laryngeal injections.
Marketed between May 1939 and sometime in 1940
Anatomical plate: "L'Anatomie de L'Homme" by Dr Bourgery and draughtsman Jacob -1837/1843
Painted botanical plate - Cryptogamy
Voyage to the South Pole and Oceania on the corvettes the Astrolabe and the Zélée, executed by order of the king during the years 1837-1838-1839-1840 under the command of M. Dumont-d'Urville captain of vessel
Published in 1846
Atlas of Natural History - Botany
Cryptogamy
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
Bibliothèque Choisie de Médecine - Volume 8
Selected Library of Medicine
By François PLANQUE - 1750
Complete original edition with 10 fold-out plates
Memento Mori sculpted from a deck of cards - Poker
Size M
RED color
Steampunk Flight of butterflies Napeocles Jucunda et Salamis Parhassus
Pair of ebonite medical cannulas in their original cardboard box
Circa 1920–1930
Original stock from that period
Southern eland polish horn
Horn on pedestal - Taurotragus oryx
Deer antler sculpture - Snake and Skulls Totem on pedestal
Material : Antler
Origin: Indonesia
Dragon Stone
Septaria egg of Madagascar
