First of all, the history of this rock goes back to antiquity. Although there is no explicit information dealing with it, it would seem to have been used by the faithful in the worship of Athena, the Greek goddess of War and Wisdom. It would then have been used by the Vikings to orient them when the sky was overcast. Indeed, the transparent face of the stone acted as a filter, and thus allowed them to spot the sun. This is why it is also called “stone of the Vikings” or “compass stone”.
First described in 1813 by the mineralogist Lucas, the cordierite stone was dedicated to the engineer and geologist Louis Cordier, from which it takes its name. The latter had established its first description in 1813, calling it “dichroitic” (from the Greek etymology “duo of colours”). The first samples of the time came from Cape Gattes in Spain, but the selected topotype deposit is finally that of Bodenmais, in Germany.
The CIBJO (International Confederation of Jewellery, Goldsmithing of Diamonds, Pearls and Stones) prohibited the designation “water sapphire,” that was given to this stone for a time. It is indeed part of the pleochroic gems, that is, varying in colour depending on the light in which it is observed. This characteristic due to its high aluminium content gives the stone its uniqueness. It is therefore particularly highlighted after a faceted or cabochon cut.
It can also be found in weight variations ranging from 1 to 10 carats, but the most remarkable stones rarely exceed 5 carats. In 1967, gemologists thought they had found cordierite when they had actually discovered tanzanite, with similar hues.
It is a mineral species belonging to the group of silicates, whose formula Al3Mg2AlSi5O18 contains traces of Mn, Fe, Ti, Ca, Na and K. Long considered a cyclosilicate, it is now classified as a tectosilicate. Its exceptional composition makes it an insoluble stone both in water and in acid, and resistant to fire. Coming from metamorphic clay rocks, this mineral can be found in the heart of cordierite and andalusite schists.
The stone is particularly distinguished by its bluish nuances, with vitreous to matt lustre. This is explained by its composition of aluminium, iron and magnesium. But from its deep pleochroism flow multiple variations of yellow and purple. The crystals can reach up to 18 cm and have a very strong polychroism. The most important specimen ever cut appears in the British Museum, and weighs 855 carats.
It is frequently found under the name of iolite (from the Greek ios which means “purple”), but also of “violithe,” in reference to the flower carrying its colour (the violet). Other names remain rarer, such as that of “New Zealand blue quartz,” given by the mineralogist Steinheil, or “steinheilite,” given by Pansner. It is frequently found under the name of iolite (from the Greek ios which means “purple”), but also of “violithe,” in reference to the flower carrying its colour (the violet).
Other names remain rarer, such as that of “New Zealand blue quartz,” given by the mineralogist Steinheil, or “steinheilite,” given by Pansner. Like topaz, blue sapphire and tanzanite, cordierite is one of the most popular transparent blue gemstones, but it is often mistaken with amethyst, quartz, tanzanite or serpentine.
The benefits of this gem are numerous on the psychological level, it particularly affects sleep and spirituality. Known to aid smooth falling asleep, it also promotes the restorative function of sleep, which it tends to make deeper, as well as reduces the nightmares of those who use it. We can first place a tetrahedron close to the bed to take advantage of its energies. Contact with this Tanzanite stone allows spiritual elevation and contributes to accessing higher planes, in stages. It is a clear crystal that accompanies astral journeys.
This rock is particularly intended for beginners who wish to learn about spirituality and the art of meditation. It intervenes in the development of spirituality, as well as guides the deepening of the faculties of clairvoyance, and takes part in the balance between astral journey and life in communion with the earth. This stone also has a very positive influence on anxiety and emotions. It is a soothing crystal that releases tension and fear. Its powerful vibrations help chase away negative thoughts and invite self-confidence. It increases the feeling of security and has a very beneficial impact on the deep anxieties linked to loneliness, or the feeling of helplessness.
This gem is recommended in the event of relational conflicts whether they are with your lover or with a family member. It is indeed able to transform stress or fear into positive feelings. This stone also represents the twenty-first year of marriage; it can thus be offered mounted on a ring, or in the form of a bracelet. Cordierite stone also tends to improve intuition, and therefore decision-making. Being very solid, this rock invites you to express your feelings. It is therefore particularly suitable for people who fail to communicate effectively or to open up, or who wish to grow emotionally. Indeed, it helps to find the way to feelings and to the listening of the other, thus allowing the most logical personalities to associate the heart and the thought. Many therapists practising the art of lithotherapy use cordierite in the form of a tetrahedron, to increase their capacity for empathy and better understand the needs of their patients.
On the other hand, the energy released by this mineral is excellent in the treatment of emotional wounds linked to problems of love or money. It helps invisible wounds to heal and illuminates the road that leads to new perspectives: that of financial independence, for example. It attracts abundance on a material level, and helps people reach their goals and take advantage of the opportunities available to them. Cordierite stone is intended for those who need to find a healthy base, on the sentimental level. It helps to open up to new people and provides emotional comfort, thus helping to regain self-confidence. Also, the energies of this rock can be reinforced by associating it with other crystals, in particular haematite. This will bring a superb “cat eye” aspect and increase its benefits on the psyche. It can also be worn as a bracelet, associated for example with sun stones, or as a ring.
Having covered a lot about its psychological benefits, we too often forget the virtues of the iolite stone on the human body. It is particularly recommended for treating liver disorders. Thus people with sensitive liver, suffering from such disorders as that resulting from alcohol or other factors, will be able to use this crystal not only to help eliminate toxins, but also to regenerate the liver. Cordierite stone is also more generally a detoxifying stone, and therefore recommended for people suffering from addictions.
In Brazil, this silicate stone is used to treat tropical disorders causing a fever. It is indeed useful in case of bacterial or viral infection and strengthens the immune system; being insoluble in water as in acid, this stone tends to transmit its own resistance to you. The effects of cordierite stone are also beneficial for the kidneys and the heart. It stimulates the respiratory and cardiovascular systems. This soothing rock also helps regulate the wearer’s blood pressure. One of its greatest fields of action concerns digestion. It acts on a number of intestinal and stomach disorders. Finally, this Tanzanite stone is widely used against circulatory discomforts as well as skin rashes.