Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by composition]
6. inorganic material
7. mineral
8. quartz (mineral)
9. chalcedony

Additional parents:

1. top of the aat hierarchies
2. Materials Facet
3. Materials
4. materials
5. materials by composition
6. inorganic material
7. rock
8. rock by form
9. stone
10. stone by quality
11. gemstone
12. gemstones by specific type

Anotations

Scope note:

Semiprecious stone composed of dark green chalcedony with flecks of red jasper that were thought to resemble drops of blood. Bloodstones, when submerged in water, give a reddish reflection. They were occasionally used in ancient times as cylinder seals, during the Middle Ages for sculptures representing the flagellation of Christ, and currently as gemstones in jewelry.