Size: 4.7 cm (approximately)
Weight: 36 grams (approximately)
Chakra: 7th (Skull) 1 st (crotch)
Chemical properties: Na (Li, A1, Ca) (Mn, Mg, Fe, T1, Cr) 3AI6 (BO3) 3SI6018 (OH) 4
The microscopic structure is still the same, rhombohedral: crystal elongated section which is triangular with rounded sides. Tourmaline is a silicate boron-aluminum. Its other components induce a change in color.
Even more than quartz, tourmaline has a large piezoelectric effect. By rubbing a crystal of tourmaline electrify it provides itself a positive terminal and a negative pole.
The black tourmaline rich in iron load more strongly than others.
We can say generally that tourmaline stimulates what man has noblest and most refined.
After numerous tests and measures for dowsing is the stone No. 1 against electromagnetic waves (phones, TV, computers, power lines, etc. ...).
Tourmaline contains boron which is a real physical "shield" against radiation (computer, laptop, etc. ...). It is a key stone in our modern world "bombed" by radiation.
Here it is fitted with a magnetic clip that greatly enhances the power of the crystal.
Tourmaline boosts 2 fields of energy: that of the first chakra (crotch) and the 7th chakra (top skull).