Bloodstone
Quartz var. Heliotrope · Semi-Precious Gemstone and Decorative Stone
Crystal System
Trigonal, forming massive aggregates with microcrystalline quartz structure (chalcedony)
Mineral Group
Silicates, specifically the Tectosilicate subgroup
Chemical Formula
SiO2 with embedded inclusions of green celadonite, chlorite, and red iron oxides (hematite)
Formation Process
Sedimentary or hydrothermal low-temperature deposition, where silica-rich solutions deposit microcrystalline quartz in cavities or fractures, accompanied by iron and magnesium-bearing minerals
About This Crystal
An opaque, polished smooth oval gemstone with a dark forest green body color, exhibiting characteristic splashy red and brownish-orange spots and patches resembling droplets of blood, featuring a vitreous to waxy luster
Physical Characteristics
Dark green color with red inclusions, white streak, no distinct cleavage with a conchoidal to uneven fracture, specific gravity of approximately 2.58 to 2.64, brittle tenacity, and generally inert to ultraviolet fluorescence
Optical Properties
Uniaxial positive with micro-polycrystalline structure causing aggregate double refraction, refractive index around 1.54 to 1.55, and no significant pleochroism due to the fine-grained aggregate nature
Hardness & Durability
Origin Region
India, Brazil, Australia, USA, and Scotland; found in sedimentary rock formations and river beds
Hardness & Durability
Mohs hardness of 6.5 to 7, good toughness due to the interlocking microcrystalline structure, highly stable and well-suited for various types of jewelry including rings and pendants
Care & Maintenance
Clean safely using warm soapy water and a soft cloth, avoid harsh chemical cleaners and prolonged exposure to direct, intense sunlight, and store separately from softer gemstones to prevent scratching
Rarity & Value
Common to uncommon, with value determined by the vibrancy of the green background and the dramatic contrast and distribution of the red spots; typical polished specimens are very affordable
Special Characteristics
Notable for its distinctive blood-red spots of hematite contrasting against an opaque dark green chalcedony matrix, historically referred to as heliotrope or the sun-turner
Lore & History
Historically associated with ancient lore where the red spots were believed to be the blood of Christ falling on green jasper at the crucifixion; traditionally used as an amulet for courage, vitality, and grounding, and associated with the root and heart chakras in modern crystal healing