Bloodstone, also called heliotrope, is a dark green chalcedony speckled with spots of red iron oxide. Those flecks looked like drops of blood to early observers, which is where the dramatic name comes from. It has been carved into seals, signets and amulets since ancient times, and in the Middle Ages it took on strong Christian symbolism. Bloodstone is the traditional birthstone for March, sitting alongside aquamarine. Most material today comes from India, with more from Brazil, Australia and the USA.
Like other chalcedonies, bloodstone sits at 6.5 to 7 on the Mohs scale and has no cleavage, so it is a sturdy, dependable stone for daily wear. It is almost always cut as cabochons, beads or carved signet stones rather than faceted, since it is opaque. It suits rings, cufflinks and pendants, and it has long been a favourite in men's jewellery. Care is easy. Warm, soapy water and a soft brush will keep it looking its best.
All of these are members of the chalcedony family, coloured by different mineral inclusions.
