Mineral

Bloodstone (Heliotrope)

Silicon Dioxide (SiO2) with iron silicate and iron oxide inclusions

Hardness: 6.5-7 Mohs; Color: Dark green base with red to brownish spots or streaks; Luster: Vitreous to waxy; Crystal Structure: Trigonal (microcrystalline); Cleavage: None (conchoidal fracture); Specific Gravity: 2.58-2.64

Hardness: 6
Color: Dark green base with red to brownish spots or streaks
Luster: Vitreous to waxy

Identified March 29, 2026More mineral →

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Physical properties

Formation & geological history

Formed through the precipitation of silica in cavities of igneous rocks at low temperatures. Variations occur as chalcedony. Significant deposits date back through various geological eras, including Tertiary and Jurassic periods.

Uses & applications

Primary use in lapidary arts, jewelry (rings, pendants, and seals), cabochons, and as a decorative stone for metaphysical collectors.

Geological facts

In the Middle Ages, the red spots were believed to be the blood of Christ, giving the stone legendary status and sacred healing properties. It is a traditional birthstone for March.

Field identification & locations

Identify in the field by its characteristic 'blood-splatter' look on a dark green jasper base. Common locations include India, Brazil, Australia, and the USA (California). It produces a smooth, waxy surface when polished.

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