Bloodstone is a dark green Chalcedony with occasional spots and splashes of blood-red Jasper. The Greeks named it Plasma, meaning 'blood' and it is sometimes referred to as 'Heliotrope' or 'Ematille' (especially in old grimoires). Bloodstone has a reputation for being a powerful healing crystal. According to one legend the stone formed when the blood of Christ was spilled on the rocks below the cross, and the stone is blessed with the Master Teacher's healing power. Mediaeval Christians named it 'Martyr Stone' and it was often used for carvings of the crucifixion or saintly martyrs. Older legends from other cultures link Bloodstone with the healing powers of the Sun God.

Since ancient times Bloodstone has been considered a special charm for warriors. Roman soldiers believed it could staunch the flow of blood and prevent wounds from becoming infected and in India it is still used today as an aphrodisiac and medicine. Bloodstone is said to be especially effective for lower back pain and blood disorders such as anaemia, diabetes, high blood pressure or circulation problems. It is a useful crystal to use in any healing work, believed to increase the flow of blood to the tissues, boost the immune system and improve overall health. An old method of channeling the healing power of the sun is to place a Bloodstone in water, leave it in direct sunlight for three hours, then drink the water as a healing potion (best remove the stone first!).

Bloodstone is said to have a special affinity with the herb Heliotrope ('turns with the sun'), and if the two are used together in spells or charm bags the herb is believed to amplify the stone's power. According to old magical writings, a charm made with Bloodstone and Heliotrope will make the bearer invisible. Sleeping with Bloodstone and Heliotrope under your pillow is said to cause prophetic dreams of your future, though like Tarot cards, these dreams show how your future will unfold in relation to your life in the present moment. Rather than solid predictions of the future, they should be considered a snapshot of what will be if you continue on your present course and do not change your actions or behavior.

Meditation with Bloodstone is said to increase confidence, courage, strength of mind and firmness of purpose. The stone can help you regain a feeling of control, especially when events in life seem to be spiralling out of control. It encourages clear thinking and overcomes feelings of helplessness or worthlessness that can paralyze you and prevent you from taking necessary actions. Some crystal workers say that Bloodstone can give the courage needed to accept the guidance of your heart and follow your dreams, living life the way you want, no matter what anyone else might think or say. It is also renowned as a lucky stone for gamblers, and is said to bring success in games and competitions.