Material Identity
Bloodstone is a dark green member of the cryptocrystalline quartz family, usually chalcedony-like in structure, flecked with small red to brownish-red spots. Mindat describes it as a variety of prase, dark green to greenish-blue, carrying blood-red flecks generally attributed to iron oxide minerals such as hematite. The older name heliotrope is still in use, and the trade term blood jasper appears as well — though in the strict sense bloodstone is not simply jasper. The most accurate description stays concrete: a dark green quartz-family material patterned with red.
Visual Character
The classic appearance is a green ground bearing red flecks or larger patches. The green may run to deep forest, blue-green, gray-green, or nearly black-green; the red shows as pinpoint specks, scattered droplets, or broader brown-red marks. Every piece differs — one stone reads as green with a few isolated red points, another is densely spotted across its whole surface. Held in the hand, the patterning can suggest moss, earth, and mineral veins compressed into a single opaque object. Unlike a faceted gem, bloodstone works through surface: polish and pattern placement define what the eye sees.
Meaning and Cultural Context
The name heliotrope comes from Greek words for sun and turning, and ancient writers connected the stone with ideas about reflected light. Valued in antiquity, bloodstone long served as a March birthstone, and in medieval Europe its red markings took on Christian associations — the red flecks read against the green ground as drops of blood. These layers of naming and interpretation form a record of how differently people have seen the same material across centuries, and they remain part of its cultural life today, including for wearers who carry it for personal reasons.
Jewelry and Care
The opaque, even structure takes a smooth polish and suits cabochons, beads, signet rings, and carved forms, where a cutter can place the red markings deliberately. It is a robust carving material, but like other quartz-family stones it should be kept clear of harsh chemicals and ultrasonic cleaners, which can dull the polish. Clean with mild soapy water and a soft cloth, and store apart from harder gems.
Choosing This Stone
What distinguishes one bloodstone from another is the drawing itself. A deep bluish ground with a few sparse red points reads quietly; a densely patterned stone feels busier and more graphic. In a signet ring, a single well-placed red patch can anchor the whole design, while a bead strand benefits from stones matched in ground color. Let the intended piece guide how much pattern you want.