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Entry № 344

Pyrite

Iron Sulfide

Fool's gold, cut into flawless brassy cubes.

Chakra

Solar Plexus · Sacral

Element

Fire · Earth

Zodiac

Leo · Aries

Pyrite

I. The Metaphysical Reading

How the stone has been held.

Pyrite is the classic stone of practical confidence — kept in tills, on desks and in workshops by people who want their effort to translate into something tangible. Practitioners work with it for follow-through rather than inspiration, and for keeping one's own resources firmly one's own.

Chakra
Solar Plexus · Sacral
Element
Fire · Earth
Zodiac
Leo · Aries
Keynote
Fool's gold, cut into flawless brassy cubes.

II. The Scientific Reading

What the lattice actually does.

Pyrite is iron disulfide and the most abundant sulfide mineral in the crust, forming striated cubes, pyritohedra and octahedra in hydrothermal veins, sedimentary rocks and coal. Its brassy colour and metallic lustre have fooled prospectors for centuries, but it is distinguished from gold by being brittle, far harder, and by leaving a greenish-black streak. In damp air pyrite oxidises to iron sulfates and sulfuric acid — the process behind acid mine drainage and behind 'pyrite decay' in museum specimens — so it should be stored dry and never soaked or worn in water.

Formula
FeS₂
System
Cubic (isometric)
Hardness
6 – 6.5 (Mohs)
Provenance
Spain (Navajún, La Rioja), Peru (Huanzalá), Italy (Elba), China, USA

References & Sources

Independent mineralogical references used to verify the scientific details above.

Mineral Profile

Fact Sheet

Chemical Formula
FeS₂
Crystal System
Cubic (isometric)
Mohs Hardness
6 – 6.5 (Mohs)
Density
4.9 – 5.2 g/cm³
Refractive Index
Opaque (metallic; RI ~1.81 measured optically)
Provenance
Spain (Navajún, La Rioja), Peru (Huanzalá), Italy (Elba), China, USA
Color Origin
Pale brass-yellow with metallic lustre, often tarnished iridescent

Related Crystals

Stones that share this lattice

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Next in the Atlas

Amethyst

The stone of tempered clarity.