mineral

Bloodstone (Heliotrope)

Silicon Dioxide (SiO2) with inclusions of Hematite or Iron oxide

AI-generated identification · may be incorrect

Hardness: 6.5-7 on Mohs scale; Color: Dark green with red spots; Luster: Vitreous to waxy; Crystal structure: Hexagonal (trigonal); Cleavage: None (conchoidal fracture); Specific gravity: 2.6-2.7

Hardness: 6
Color: Dark green with red spots
Luster: Vitreous to waxy

Identified July 13, 2026More mineral →

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Physical properties

Hardness: 6.5-7 on Mohs scale; Color: Dark green with red spots; Luster: Vitreous to waxy; Crystal structure: Hexagonal (trigonal); Cleavage: None (conchoidal fracture); Specific gravity: 2.6-2.7

Formation & geological history

Forms at low temperatures through the deposition of silica from groundwater in cavities of other rocks, often volcanic. The red spots are caused by inclusions of iron oxides such as Jasper or Hematite.

Uses & applications

Primarily used as a gemstone for jewelry, carvings, and as a collector's specimen. It is also historically used for talismans and amulets.

Geological facts

Legend says the red spots represent the blood of Christ. It was used in ancient times as a healing stone and to stop bleeding. It is the traditional birthstone for March.

Field identification & locations

Identify by its characteristic forest-green chalcedony base with distinct red or brownish spots. It is commonly found in India, Brazil, Australia, and the USA. Collectors look for vibrant red contrasts against deep green.