About the item: This astonishing mineralogical specimen features dendritic allargentum and silver after dyscrasite in a calcite matrix, sourced from the famous Bouismas Mine in Morocco. The piece is characterized by its aesthetic, branching (dendritic) formations and a luxurious metallic luster ranging from dark gray to bright silver. It is an exceptionally rare example of pseudomorphism, where precious metals have completely replaced the original dyscrasite crystal structure over time while preserving its unique external form.
Technical Information:
Object: Dendritic allargentum and silver (pseudomorph after dyscrasite) in calcite matrix
Origin: Bouismas Mine, Bou Azzer district, Morocco
Discovery Period: Specimens of this type from the 2015 expeditions are considered among the finest in the world Weight: 32.95 g
Dimensions: 46.5 × 35.6 × 33.6 mm
Composition: Allargentum (a rare silver-antimony mineral) and native silver
Condition: Natural, aesthetic dendritic structure; the specimen features sharp, well-defined crystal forms. Inclusions: A Certificate of Authenticity is included, which can be verified in our online database.
Artistic and Structural Analysis: The specimen features a striking texture—dark, metallic "tree-like" crystal growths stand out vividly against the pale calcite base. The distribution of allargentum and silver creates a dramatic visual contrast and an organic composition shaped by nature. Every dendritic branch is unique, and their elegance emphasizes the specimen's value and the natural complexity of its formation.
Historical and Geographical Context: The Bou Azzer region in Morocco is globally recognized for its unique mineral deposits. This specimen was formed through complex hydrothermal processes when original dyscrasite crystals were gradually replaced by a mixture of allargentum and silver. The 2015 finds from the Bouismas Mine are regarded as some of the best examples of this species in mineralogical history due to their clarity and formal precision.
Collectible and Investment Value: Scientific Value: A museum-grade exhibit highly prized by systematic mineralogy collectors due to the rarity of allargentum. Investment Significance: Due to limited supply and high quality, Moroccan minerals maintain stable value and are highly sought after in the international market. Legal Status: Collectible object, legal for trade within the EU territory.
