mineral

Bloodstone

Heliotrope (Cryptocrystalline Quartz, SiO2)

Hardness: 6.5-7 (Mohs Scale); Color: Dark green with red speckles (iron oxide/Jasper); Luster: Vitreous to waxy; Crystal Structure: Hexagonal (trigonal cryptocrystalline); Cleavage: None.

Hardness: 6
Color: Dark green with red speckles (iron oxide/Jasper)
Luster: Vitreous to waxy

Identified June 7, 2026More mineral →

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Physical properties

Hardness: 6.5-7 (Mohs Scale); Color: Dark green with red speckles (iron oxide/Jasper); Luster: Vitreous to waxy; Crystal Structure: Hexagonal (trigonal cryptocrystalline); Cleavage: None.

Formation & geological history

Formed primarily in low-temperature hydrothermal environments where silica-rich fluids precipitate in cavities of volcanic rocks. The red spots are caused by inclusions of Hematite or Jasper.

Uses & applications

Commonly used in jewelry (cabochons, beads, rings), ornamental carvings, and historical talismans or amulets.

Geological facts

In the Middle Ages, the red spots were believed to be the blood of Christ, leading to its extensive use in religious carvings. It is also an alternative birthstone for March.

Field identification & locations

Identify by its deep moss-green body and characteristic red jasper specks. Commonly found in India, Brazil, Australia, and the USA. It will leave a white streak on a streak plate but the Jasper spots may leave a reddish-brown streak.

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