sedimentary

Bloodstone (Heliotrope)

Silicon Dioxide (SiO2) with inclusions of Chlorite or Actinolite

AI-generated identification · may be incorrect

Hardness: 6.5-7 on Mohs scale; Color: Dark green with red spots or streaks; Luster: Vitreous to waxy; Crystal Structure: Cryptocrystalline (Trigonal); Cleavage: None; Specific Gravity: 2.58-2.64

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

Identified April 6, 2026More sedimentary →

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Physical properties

Hardness: 6.5-7 on Mohs scale; Color: Dark green with red spots or streaks; Luster: Vitreous to waxy; Crystal Structure: Cryptocrystalline (Trigonal); Cleavage: None; Specific Gravity: 2.58-2.64

Formation & geological history

Formed through the deposition of silica from groundwater in the cavities of volcanic or sedimentary rocks at low temperatures. Common in various geological environments but predominantly associated with igneous extrusive rocks as secondary minerals.

Uses & applications

Commonly used in lapidary work, jewelry (especially signet rings or pendants), cabochons, and small ornamental carvings. Often collected as a healing stone in metaphysical practices.

Geological facts

Also known as Heliotrope, which means 'sun turner' in Greek. Legend says the red spots formed when Christ's blood fell upon a piece of jasper at the foot of the cross. It is the original birthstone for March.

Field identification & locations

Identify by its characteristic dark green opaque body and distinct red/orange 'blood' spots of iron oxide (hematite). Commonly found in India, Brazil, Australia, and Germany. Collectors look for high contrast and vibrant red spotting.