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G204 Natural Silver

G204 Natural Silver


G204: Natural Silver. – Locality: Bousimas Mine, Bou-Azzer, Morocco. Select specimen: Natural silver in Calcite and Acanthite matrix. Appearance:

Approximate measurements: LxWxH-   7/8″ x   5/8″ x 7/8″. –  Weight – 8 grams.

Availability: single piece, exclusive. Access to these specimens is becoming rare and less available to the public. 

The specimen is quite delicate, while we use extreme care in packing, you may find some pieces flaked off. 

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Silver is a chemical element; it has symbol Ag (from Latin argentum ‘silver’, derived from Proto-Indo-European *h₂erǵ ‘shiny, white’) and atomic number 47. A soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. The metal is found in the Earth’s crust in the pure, free elemental form (“native silver”), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite. Most silver is produced as a byproduct of copper, gold, lead, and zinc refining.

Silver has long been valued as a precious metal. Silver metal is used in many bullion coins, sometimes

alongside gold:  while it is more abundant than gold, it is much less abundant as a native metal. Its purity is typically measured on a per-mille basis; a 94%-pure alloy is described as “0.940 fine”. As one of the seven metals of antiquity, silver has had an enduring role in most human cultures.

Other than in currency and as an investment medium (coins and bullion), silver is used in solar panels, water filtration, jewelry, ornaments, high-value tableware and utensils (hence the term “silverware”), in electrical contacts and conductors, in specialized mirrors, window coatings, in catalysis of chemical reactions, as a colorant in stained glass, and in specialized confectionery. Its compounds are used in photographic and X-ray film. Dilute solutions of silver nitrate and other silver compounds are used as disinfectants and microbicides (oligodynamic effect), added to bandages, wound-dressings, catheters, and other medical instruments

Acanthite is a common silver mineral in moderately low-temperature hydrothermal veins and in zones of supergene enrichment. It occurs in association with native silver, pyrargyrite, proustite, polybasite, stephanite, aguilarite, galena, chalcopyrite, sphalerite, calcite and quartz. Acanthite was first described in 1855 for an occurrence in the Jáchymov (St Joachimsthal) District, Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia, Czech Republic. The name is from the Greek “akantha” meaning thorn or arrow, in reference to its crystal shape.

Dyscrasite is a silver antimonide. It forms orthorhombic, opaque, metallic, silver-white prismatic, to platy, striated crystals with pyramidal terminations; also as granular, foliated, or massive. It occurs as a primary mineral in silver ore deposits.


Additional information

Weight 0.25 lbs
Dimensions 1 × .75 × 1 in

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