Bloodstone
Bloodstone, also known as Heliotrope, is a dark green variety of chalcedony with red spots of iron oxide that resemble drops of blood. It is valued for its unique appearance and has been used in jewelry and carvings for centuries.
About
Bloodstone
Bloodstone is a variety of chalcedony, which belongs to the quartz mineral family. Its chemical composition is silicon dioxide (SiO₂), and it crystallizes in the trigonal crystal system, although it typically appears in massive (non-crystalline) form. The name “Bloodstone” comes from its distinctive appearance—dark green with red spots that resemble blood, caused by iron oxide inclusions. The base color of Bloodstone is usually deep green, while the red spots are due to hematite or iron oxide. Some stones may also show yellow or brown inclusions. Bloodstone is typically opaque, though it can occasionally be slightly translucent at thin edges. It has a waxy to vitreous luster, giving it a smooth and polished appearance when cut.
Physical & Chemical Properties
| Name | Bloodstone |
|---|---|
| Scientific Name | Bloodstone |
| Mineral Group | Quartz (Silicate) |
| Hardness (Mohs) | 6.5 – 7 |
| Color | Dark green with red spots |
| Origin | India (primary source), Brazil, Australia, USA, Germany |
| Chemical Formula | SiO₂ |
Quick Facts
| Crystal System | Trigonal |
|---|---|
| Specific Gravity | 2.58 – 2.64 |
| Birthstone | March (alternative birthstone) |
| Refractive Index | 1.53 – 1.54 |
| Optical Character | Cryptocrystalline |
| Dispersion | Low |
| Major Sources | India (primary source), Brazil, Australia, USA, Germany |
| Treatments | Bloodstone is usually untreated. Some lower-quality stones may be dyed to enhance color, but natural stones are preferred. |
| Price Range | $5 – $20 |
| Care Instructions | Clean with mild soap and water Avoid harsh chemicals Protect from strong impacts |