Bloodstone
Quartz var. Plasma / Heliotrope · Semi-Precious Gemstone
Crystal System
Trigonal, microcrystalline (Chalcedony)
Mineral Group
Silicates (Tectosilicate)
Chemical Formula
SiO2 with inclusions of iron oxides and amphibole
Formation Process
Hydrothermal and sedimentary deposition at low temperatures
About This Crystal
An opaque, dark green jasper variety speckled with distinct red spots or veins of hematite resembling blood. Exhibits a smooth cabochon polish with a waxy to vitreous luster.
Physical Characteristics
Dark green body color with red spots; white streak; conchoidal fracture; cleavage is absent due to microcrystalline structure; specific gravity around 2.65; opaque; brittle tenacity
Optical Properties
Uniaxial positive, refractive index around 1.53 - 1.54, double refraction, no significant pleochroism
Hardness & Durability
Origin Region
India, Brazil, Australia, USA, and China; found in sedimentary rocks and river beds
Hardness & Durability
Mohs hardness of 6.5 to 7, good toughness making it durable for jewelry wear
Care & Maintenance
Clean with warm soapy water and a soft brush; avoid harsh chemicals and prolonged direct sunlight; store separately to prevent scratching softer stones
Rarity & Value
Common to uncommon; value depends on the vibrancy of the green body color and the contrast and distribution of the red spots; generally affordable price range
Special Characteristics
Characterized by its unique red and green color contrast caused by iron oxide inclusions within a green chalcedony matrix
Lore & History
Historically known as the martyr's stone in Christian lore, believed to have formed from drops of Christ's blood falling on green jasper at the crucifixion. Associated with vitality, courage, and grounding in metaphysical traditions.