Stone Collection Set - 10 Pyrite Stone: Golden Color (in clear plastic box)

All natural untreated 10 different golden color Pyrite stones are from China.

(similar to picture, will be pick from stock of more than 100 boxes)

Size of each piece is about 27x16x12 mm (about 1.1x0.6x0.5 inch).

Weight of each piece is about 10 to 18 g, total weight with packing box is about 130 gram to 160 gram.

Box size: 132 x 69 x 24 mm

These are natural stones. Each one will be a bit different (specimen size, color and weight) even in the same batch.
 

The pictures in the listing are just for reference as we are selling multiple pieces with same pictures.

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Pyrite

Pyrite is commonly called Fools Gold because of its similarity in color, shape, and habit to Gold. In the old mining days, Pyrite was often confused with Gold as they occur together, although Gold and Pyrite can very easily be distinguished by simple observation and testing of characteristics.

Pyrite occurs in all different shapes and forms. The smaller crystal aggregates may give off a beautiful glistening effect in light, and the larger crystals may be perfectly formed, including fascinating perfect cube and penetration twins and other bizarre crystal forms. The perfect cubes of Pyrite embedded in a matrix from the famous Spanish mines are especially treasured among collectors. Many of these specimens have fallen out of the matrix and have been repaired by having them glued back into the matrix.
Pyrite has the same chemical formula as the rarer mineral Marcasite, but it crystallizes in a different crystal system, thereby scientifically classifying it as a separate mineral species. Aggregates of iron sulfide (FeS2) where the crystal structure cannot be determined without complex analyzing material may be wrongly labeled by dealers. Some Pyrite specimens are labeled as Marcasite, and some Marcasite specimens as Pyrite.

Category: Sulfide mineral

Chemical formula: iron disulfide (FeS2)

Color: Pale brass-yellow, tarnishes darker and iridescent

Crystal habit: Cubic, faces may be striated, but also frequently octahedral and pyritohedron. Often inter-grown, massive, radiated, granular, globular and stalactitic.

Crystal system: Isometric Twinning Penetration and contact twinning

Fracture: Very uneven, sometimes conchoidal Tenacity Brittle

Mohs scale: hardness 6–6.5

Luster: Metallic, glistening

Streak: Greenish-black to brownish-black; smells of sulfur

Diaphaneity: Opaque