Bloodstone

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Bloodstone is green jasper dotted with bright red spots of iron oxide. The green color is caused by small particles of chlorite, a silicate mineral or hornblende needles interspersed throughout the host material. Its distinctive reddish spots are caused by the presence of iron oxides.

Bloodstone Polished
Bloodstone Classification
Common Name Bloodstone
Species Quartz
Bloodstone Optical Properties
Transparency Semitranslucent - Opaque
Dispersion Strength: None
Refractive Index 1.535-1.539
Birefringence 0.004
Optic Character Uniaxial
Optic Sign Positive
Polariscope Reaction Aggregate (AGG)
Fluorescence SWUV: Inert
LWUV: Inert
Pleochroism None
Bloodstone Characteristic Physical Properties
Hardness 6.5-7
Streak White
Specific Gravity 2.550-2.700 Typical:2.600
Toughness Excellent
Inclusions Bloodstone is dark green with red or brown spots. Appearance is what separates bloodstone from other chalcedonies.
Luster Vitreous, Greasy
Stability Good
Fracture Conchoidal, Granular
Cleavage None
Bloodstone Chemistry & Crystallography
Chemical Name silicon dioxide (aka silica)
Chemical Formula SiO2
Crystal System Trigonal
Chemistry Classification Silicate

Bloodstone Colors

  • Brown Bloodstone Brown
  • Red Bloodstone Red
  • Green Bloodstone Green

Alternate Names

Heliotrope

Countries of Origin

Unknown; China; Brazil; Kenya; India

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Tim Matthews

Author

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.