sedimentary

Bloodstone

Heliotrope (cryptocrystalline Quartz, SiO2 with inclusions of Hematite)

Hardness: 6.5-7 (Mohs scale); Color: Dark green with red spatters; Luster: Vitreous to waxy; Crystal structure: Trigonal/Microcrystalline; Cleavage: None/Conchoidal fracture; Specific gravity: 2.58-2.91

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

Identified April 4, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed through the deposition of silica from cold aqueous solutions at shallow depths in cavities and veins of various rock types. The green color is typically caused by inclusions of chlorite or amphibole, while the red spots are iron oxide (hematite).

Uses & applications

Primarily used in jewelry (cabochons, beads), decorative carvings, and as a popular lapidary material for crystal towers and 'healing stones'. Historically used for signet rings and cameos.

Geological facts

Also known as Heliotrope, which comes from the Greek words meaning 'to turn the sun.' In Christian legend, the red spots were said to be the blood of Christ falling on green jasper during the crucifixion. It is the original birthstone for March.

Field identification & locations

Identify by its opaque dark green base with distinct red or brownish spots. Found in riverbeds or as pebbles in India, Brazil, Australia, and the USA. It will not be scratched by a steel knife.

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