mineral

Bloodstone (Heliotrope)

Silicon dioxide (SiO2) with Hematite inclusions

Hardness: 6.5-7 on the Mohs scale; Color: Dark green with red spots or streaks; Luster: Vitreous to waxy; Crystal structure: Hexagonal (Trigonal, microcrystalline); Cleavage: None; Specific gravity: 2.58-2.64

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

Identified March 31, 2026More mineral →

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Physical properties

Formation & geological history

Formed at shallow depths and low temperatures by the precipitation of silica from groundwater in fractures or cavities. Red inclusions are iron oxide (hematite). Common in volcanic regions and riverbeds.

Uses & applications

Majorly used in jewelry (cabochons, beads), seal stone engraving, and as a popular specimen for metaphysical collectors.

Geological facts

In the Middle Ages, the red spots were believed to be the blood of Christ. It is a traditional birthstone for March and was once used in Babylonian times for making seals and amulets.

Field identification & locations

Identify by its characteristic 'forest green' base with distinct red or brownish spots. Found in India, Brazil, Australia, and the USA. Collectors look for high contrast and well-defined spotting.

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