Specularite (Specular Hematite)
Hematite · Mineral Specimen / Industrial Mineral / Decorative Stone
Crystal System
Trigonal crystal system; typical habit for this variety is micaceous, foliated, or sparkling granular masses.
Mineral Group
Oxides (Hematite group)
Chemical Formula
Fe2O3 (Iron Oxide)
Formation Process
Primarily formed through sedimentary processes (Banded Iron Formations), hydrothermal veins, or as a sublimation product in volcanic areas.
About This Crystal
A sparkling, metallic variety of hematite characterized by a 'glittery' appearance due to thousands of tiny mirror-like flakes. Color is typically steel-gray to black with a bright metallic luster. Opaque transparency.
Physical Characteristics
Color: Dark silver-grey; Streak: Reddish-brown; Luster: Metallic/Specular; Fracture: Uneven; Specific Gravity: 5.26; Not fluorescent.
Optical Properties
Opaque; refractive index is very high (approx 2.9) but generally not measurable in this habit. Shows no pleochroism due to opacity.
Hardness & Durability
Origin Region
Found globally; notable sources include Lake Superior region (USA), Brazil, South Africa, and the United Kingdom (Cumbria).
Hardness & Durability
Mohs hardness: 5.5 - 6.5. Brittle tenacity; the micaceous flakes can flake off easily if handled roughly.
Care & Maintenance
Avoid acidic cleaners; clean with a soft dry brush to prevent flakes from dislodging. Sensitive to hard impacts. Do not use ultrasonic cleaners.
Rarity & Value
Relatively common; value is determined by the 'sparkle' intensity and specimen size. Generally affordable collector material.
Special Characteristics
Displays a characteristic 'specular' or mirror-like reflection from tiny crystal faces. It is sometimes weakly magnetic if it contains magnetite inclusions.
Lore & History
Historically used as a pigment (ochre) and for mirrors. In lore, it is considered a grounding stone that provides a 'protective shield' and boosts courage.