Bloodstone, (also known as heliotrope) is a microcrystalline variety of quartz (chalcedony) or green jasper dotted with bright red spots of iron oxide. It was treasured in ancient times and served for a long time as the birthstone for March. Medieval Christians often used bloodstone to carve scenes of the crucifixion and martyrs, for which reason it was also dubbed the martyr’s stone. According to the legend about the origin of bloodstone, it was first formed when drops of Christ’s blood fell and stained some jasper at the foot of the cross.
Even today, finely pulverised bloodstone is used as a medicine and aphrodisiac in India. Bloodstone is mined in India, Australia, and the United States.
Stock sizes: Available in both single and double bevel flat top signet stones and cabochon
Round: 2mm – 20mm
Oval: 5x3mm – 40x30mm
Antique (Cushion): 6x4mm – 20x15mm
Square: 6mm – 25mm
Octagonal: 8x6mm – 14x12mm
Heart: 5mm – 8mm
Coin: 10th Krugerand, 1/2 sovereign, full sovereign
Chemical Formula: SiO2 Silicon Dioxide
Crystal Structure: Trigonal – Microcrystalline Aggregates
Colour: Green with red or yellow spots
Hardness: 6.5 – 7 on Moh`s scale
Refractive Index: 1.53 – 1.54
Specific Gravity: 2.60
Cleavage: None: Fracture – Rough, Brittle
Treatments: Bloodstone is not typically dyed, heated, enhanced or treated in any way. It is one of the few gem types that remains an untreated gem from the mine to the market.
Care: Bloodstone can be cleaned easily with warm water and a mild soap or detergent. It can be wiped with a soft cloth or brush. Bloodstone has a relatively good level of hardness and durability but too many surface scratches will cause loss of polish and luster. Avoid exposure to extreme heat and temperature fluctuations.