Stone(s): Wild septaria
Color: black
Dimensions: H 110 mm – Diameter: approx. 80 mm
Approximate weight: 931 g
Stone size: polished egg
Photos are contractual.
Classification: no classification. Septaria is a sediment concretion formed by a complex mix of minerals (silica, calcite, etc.). It isn’t an officially recognized mineral species, but rather an aggregate of various minerals.
Mohs hardness: Intermediate hardness. Made up of various minerals: on the Mohs hardness scale, chalcedony is 7 and calcite is 3.
Density: 2.5 to 2.7, varies depending on the proportion of minerals
Origin: Madagascar, United States, Morocco, France, England, New Zealand
Care instructions: use a soft cloth and lukewarm water for cleaning. Handle with care to avoid scratches or impacts, as some minerals like calcite can be sensitive.

















