mineral

Bloodstone (Heliotrope)

Chalcedony (cryptocrystalline Quartz, SiO2) with inclusions of Iron Oxide/Hematite

Mohs Hardness: 6.5-7; Color: Dark green with red speckles; Luster: Vitreous to waxy; Crystal structure: Trigonal/Microcrystalline; Cleavage: None; Specific Gravity: 2.6-2.7

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

Identified June 18, 2026More mineral →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Mohs Hardness: 6.5-7; Color: Dark green with red speckles; Luster: Vitreous to waxy; Crystal structure: Trigonal/Microcrystalline; Cleavage: None; Specific Gravity: 2.6-2.7

Formation & geological history

Formed at shallow depths and low temperatures by the deposition of silica from groundwater in fractures and cavities of other rocks. Red inclusions are typically due to iron oxides or jasper.

Uses & applications

Primarily used as a gemstone in jewelry (rings/pendants), decorative carvings, and as a healing stone in metaphysical practices. Historically used in signet rings.

Geological facts

In the Middle Ages, the red spots were believed to be the blood of Christ. It was historically called 'Heliotrope' because when placed in water facing the sun, it was said to turn the sun's reflection red.

Field identification & locations

Identify by its characteristic 'blood-splatter' look of red on deep green. Often found in riverbeds or as pebbles. Common locations include India, Brazil, Australia, and parts of the USA.

Other mineral specimens

See all

Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

sedimentary

Schist

Metamorphic

Epidote

Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)

metamorphic

Nephrite Jade

Nephrite

Mineral/Rock

Banded Gneiss (River Rock/Pebble)

Gneiss (specifically a banded variety often found as a river rock)

Metamorphic Rock

Green Apatite on Albite

Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]

mineral