- Origin of the name : Initially named "Chrysolite of the Cape" by Balthazar Georges Sage in 1771, it was renamed in 1813 by Abraham Gottlob Werner in homage to Hendrik Von Prehn (1733-1785) who initially discovered it.
- Chemical composition : Calcium aluminum silicate Ca2Al2Si3O10(OH)2
- Hardness : Between 6 and 6,5
- Crystal System : Orthorhombic
- Deposits : France, Germany, Germany, India, Italy, South Africa, Switzerland, USA
- Colors : Ranging from pale green, through yellow-green to brownish yellow.
Prehnite stone belongs to the order of silicates and is quite rare. Very appreciated ornamental stone, it is found in different forms: rough, rolled, flattened pearl, cabochon cut, faceted cut, etc., depending on what you want to do with it (necklaces, bracelets, rings, earrings, small objects ...).
Its name comes from a Dutch commander, Hendrick Von Prehn, who supposedly discovered it in 1774, at the Cape of Good Hope. He brought back several of these minerals and had them analyzed by Abraham Gottlob Werner, a German mineralogist. The latter recognized the stone as a new mineral species. Thus, in 1783, Werner gave it the name "prehnite", in honor of the man he thought he had discovered it.
However, it turned out that the first samples of this stone had already been brought back in 1771 by a French astronomer, Alexis-Marie de Rochon, during a trip to the Southern Lands. Its earliest description had therefore been made by Balthazar Georges Sage. This French mineralogist named it, the same year, "Chrysolite du Cap". But this name is now forbidden.
At the time, this gem was very rare and it was already attributed certain virtues. For the shamans of South Africa, the prehnite stone allowed them to make good decisions, and thus helped them to guide their community. As for the aborigines of Australia, they believed that this stone had the power to absorb and store the energy of the sun, and then redistribute it. They used it at night to keep warm and to repel nocturnal creatures.
Prehnite Origin & Composition
Prehnite stone, containing epidote inclusions (dark or white lines), is composed of calcium silicate, aluminum and sometimes iron. Mainly green to yellow, translucent or semi-transparent, it can also take on grey or milky white tones. It looks a lot like jade. It is sometimes called "yellow jade from Australia", or "grape jade" in China. An even rarer version, orange in color, has been discovered in Canada and South Africa. Because of its color, quality and rarity, this splendid natural stone seduces jewelers and collectors.
This mineral material generally forms in cavities and cracks in eruptive rocks and crystalline shales. We find deposits in several countries of the world: South Africa and India mainly, but also United States, Australia, Mali, France, Italy, Spain, Germany, Switzerland. The prehnite of Mali is one of the most beautiful specimens, thanks to the epidote inclusions it contains.
Moreover, its refractive index is from 1.61 to 1.67. For comparison, the refractive index of the diamond is 2.42. In general, the higher the index, the slower and more deflected the light is, and therefore the brighter the stone. In addition, this stone is biaxial, which means that it has two optical axes. The transmitted light is divided into three directions of vibration. However, it can appear uniaxial (only one optical axis).
Prehnite Meaning and Properties
Prehnite Metaphysical Properties
This stone prevents its wearer from being affected by external evils and bad energies. Whether it is on a physical or emotional level, it is therefore useful for therapists, since it protects them from the projections of patients. On the other hand, it is a mineral matter that acts slowly. Therefore, it is advisable to wear it in contact with the skin. To recharge it and preserve its energetic quality, it is preferable to expose it to the light of the rising moon.
The prehnite stone is considered a "care" stone and provides powerful protection to its wearer. Beneficial for the soul, it calms the spirit, especially in tense situations. It helps to fight against fears and anxieties, and keeps away bad dreams. Its soothing effect will thus be beneficial to people suffering from chronic sadness and emotional blockages.
It brings an optimistic state of mind and encourages people to live in the present moment. Thanks to the feeling of fullness and serenity it provides, its wearer will more easily face his problems. It will also get rid of the nostalgia accumulated over time. Thus, small miseries will no longer turn into insurmountable obstacles.
It also helps to clarify confused ideas, to put some order in one's projects, which can be useful for people who are not very persevering and who lack courage. By structuring thoughts, it helps to achieve one's goals. Finally, it promotes self-awareness and self-acceptance. Green prehnite further increases perception.
Prehnite Healing Properties
By stimulating the metabolism, the prehnite stone prevents the storage of fat. It can then be used in the event of diets, in order to boost weight loss. It balances the lymphatic and circulatory system. With its cleansing and purifying properties, it relieves kidney and bladder disorders. It can therefore calm urinary disorders and relieve joint pain.
In addition, it promotes the strengthening and reconstruction of bones. It is therefore particularly suitable for growing children and elderly people or those who have suffered a fracture and whose bones are weakened. This natural stone can reduce restlessness and nervousness, which is useful in cases of hyperactivity, especially in children. In addition, it would have a regulating effect on the hair, could protect against aging, acts on the sexual organs and would be beneficial in case of treatments against pimples.