Physical Properties of Multi Coloured Tourmaline Stone / Crystal |
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Chemical Formula: | A(D3)G6(T6O18)(BO3)3X3Z |
Chemical Composition: | Aluminium, Iron, Magnesium, Sodium, Lithium, Or Potassium |
Crystal System: | Hexagonal |
Lustre: | Vitreous |
Transparency: | Transparent to opaque |
Colour: | Multicolored |
Streak: | White |
Hardness: | 7 - 7.5 on Mohs Scale |
Tenacity: | Brittle |
Cleavage: | 3,2 |
Fracture: | Uneven, small conchoidal, brittle |
Density: | 2.82 - 3.32 |
Refractive Index: | 1.616 - 1.650 |
Tourmaline is considered to be the 8th Anniversary gemstone. It is categorized as a semi-precious stone. It comes in various shades and hues; the most common among them is the multi-coloured tourmaline. As the name suggests, it is a stone that has two or more different colours and are sometimes referred to as either 'rainbow tourmaline' or even bi-coloured tourmaline. It is considered to be one of the most complicated minerals put together with mixed crystals of aluminium boron silicate. One can create completely different shades with the slightest changes in the composition. The name 'Tourmaline' is derived from a Singhalese word "Thuramali" or "Thoramalli" a term given to distinct gemstones in Sri Lanka.
Multi-coloured tourmaline is said to strengthen weak souls and bring about self confidence in them. It helps release tension and anxiety and increases one's level of tolerance. It guards the nervous system and improves the immune system. It also enhances hand and eye coordination and flexibility of the spinal cord and brings compassion, love and energy in any relationship.
Multicoloured tourmaline has two or more shades but the most common of them all is the combination of red and green, hence the name 'Watermelon'. However, the colour changes each time you view from different angles. This is also a birthstone for those born on the month of October. Besides its numerous healing properties as mentioned above, what is unique about this stone is that it is also called the Love Stone as it is worn by those couples facing difficulties in their relationships as it is usually worn to balance one's energy in the body.
Multi Coloured Tourmaline gemstones / crystals are found in some of the countries of world are: Australia, Austria, Bolivia, Brazil, Canada, Czech Republic, France, Germany, Italy, Japan, Kazakhstan, Kenya, Madagascar, Mexico, Myanmar, Namibia, New Zealand, Norway, Portugal, Russia, Slovakia, Slovenia, Sri Lanka, USA