PHYSICAL PROPERTIES
- GROUP Silicates - cyclosilicates
- COMPOSITION Na(Mg,Fe,Li,Mn,Al)3Al6(BO3 )3If6 · 018(OH,F)4
- COLOR Black, green, brown, red, blue, yellow or pink
- CRYSTALLINE SYSTEM Hexagonal / trigonal
- CRYSTALLINE HABIT Prismatic, acicular
- HARDNESS 7 - 7.5
- FRACTURE Unequal to conchoidal
- EXFOLIATION Null
- GLOSS Vitreous
- STRIP Colorless
- TRANSPARENCY From transparent to translucent
- SPECIFIC GRAVITY 3.0 - 3.2
- REFRACTIVE INDEX 1.61 - 1.64
MINERALOGICAL CHARACTERISTICS
The black tourmaline is the variety of tourmaline most abundant. Tourmalines are a group of mixed crystals within the borosilicate family, made up of 11 species, including schorl (black), elbaite (pink, red, green, blue) and dravite (brown).
The tourmalines are characterized by having a variable composition between them although they have the same crystalline structure. The black tourmaline is opaque. It is usually called schorl tourmaline when its crystals are hard and compact, and cathedral tourmaline when the crystals are less hard and compact and have inclusions of other minerals.
Its crystals are prismatic and it is found in pegmatites, in granites, in hydrothermal veins and in pneumatolithic veins. Tourmaline is a mineral used in industry for its pyroelectric and piezoelectric properties.
Deposits: Brazil, India, Afghanistan, United States, Canada, Mexico, Namibia, Russia, Africa and Madagascar.
THERAPEUTIC PROPERTIES
The black tourmaline is considered a reference stone for cleansing, protection and transformation. It absorbs dense energies and directs them towards the earth to be transmuted. It is recommended to use it in its natural form of crystallization and in a vertical position.
The characteristics of black tourmaline make it a widely used mineral in spaces where therapies, cures and healings are carried out. Also in places where you want to keep the environment energetically clean or neutralize electromagnetic waves.
Whatever the ailment of the physical body, the tourmaline helps to regenerate and balance it on an energetic level. It is said that the strength of tourmaline is due to the shape of its parallel grooves, which transform dense energies and increase vibration.
