Hematite

saf-ahyuh r

Hematite is a dark gray to black mineral known to various cultures throughout history. Babylonians, Egyptians, Greeks, and Romans were a few of the civilizations that made use of this mineral. Hematite derives its name from a Greek word for blood, an allusion to the reddish powder produced during the fashioning process due to the presence of iron.

Hematite Rough
Hematite Classification
Common Name Hematite
Species Hematite
Hematite Optical Properties
Transparency Opaque
Refractive Index Over The Limit 2.940-3.220
Tolerance:(-0.070)
Birefringence 0.28
Polariscope Reaction Doubly Refractive (DR)
Fluorescence SWUV: Inert
LWUV: Inert
Pleochroism None
Hematite Characteristic Physical Properties
Hardness 5.5-6.5
Streak Red-Brown
Specific Gravity 4.950-5.280 Typical:5.200
Toughness Excellent
Inclusions Hematite will have a reddish color in surface fractures. Intaglios will show engraver marks.
Luster Metallic
Stability Poor
Fracture Splintery, Granular, Subconchodial
Cleavage None
Hematite Chemistry & Crystallography
Chemical Name iron oxide
Chemical Formula iron oxide
Crystal System Trigonal
Chemistry Classification Oxide

Hematite Colors

  • Gray Hematite Gray
  • Black Hematite Black

Countries of Origin

Canada; United States of America (the); China; Brazil; South Africa; Switzerland; United Kingdom of Great Britain and Northern Ireland (the)

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Tim Matthews

Tim Matthews is President and Chief Executive Officer of Jewelry Television® (JTV), as well as a member of the company's Board of Directors. He oversees and leads all aspects of the company's powerful omni-digital retail platform that uniquely specializes in fine jewelry and gemstones. His passion for business and gemstones has led him to become a recognized expert in the field of gemology. He is a life member of the Gemmological Association of Great Britain (Gem-A) and has earned Gem-A's highest degrees, the Gemmology (FGA) and Diamond (DGA) diplomas. He is also a Graduate Gemologist (GG) of the Gemological Institute of America (GIA) and has also completed GIA's Graduate Diplomas in Diamonds, Colored Stones and Pearls. Under his leadership, JTV has become the leader in the sourcing and selling of color gemstones and jewelry.

This page was created on June 27, 2014.

This page was last edited on October 24, 2019.