Black Tourmaline
schorl (tourmaline group)
The stone everyone hands you for protection. Black tourmaline is common as gravel, and it has a real trick: warm it or squeeze it and it builds a small electric charge, enough to pull ash from a pipe, which is why old Dutch traders called it the ash-puller. People carry it for protection, grounding and boundaries.
Seen · you don't have this one yet
Mineral facts
Hardness
7-7.5 Mohs
Formula
NaFe3Al6(BO3)3Si6O18(OH)4
Family
silicate
Where it comes from
Brazil, Madagascar, Pakistan, Namibia, USA (Maine, California, Colorado), China
What it is
The stone everyone hands you for protection. Black tourmaline is common as gravel, and it has a real trick: warm it or squeeze it and it builds a small electric charge, enough to pull ash from a pipe, which is why old Dutch traders called it the ash-puller. The physics is true. Look for the rounded-triangle cross-section and the grooves running the length, because no other common black stone has three sides. The EMF-protection marketing is not backed by anything. In lore it grounds and wards.
What it is confused with
black-obsidian, black-onyx, hematite, black-kyanite, shungite, black-glass
Elongated prismatic crystals with a rounded-triangular cross-section, no other common mineral has three sides, and deep, coarse, parallel striations running the LENGTH of the crystal, which is the opposite of quartz's horizontal striations. Colour is a hard opaque black with a vitreous to slightly resinous luster; broken ends are uneven and blocky, not conchoidal or cleaved. Frequently found as radiating sprays or embedded in white feldspar and quartz. It is pyroelectric: warmed crystals attract dust and paper scraps.
How to tell
Lengthwise striations plus a triangular section identifies tourmaline instantly. It scratches glass (7, 7.5), unlike shungite (3.5, 4) or jet. It is not magnetic, unlike magnetite, and it leaves no grey mark on paper, unlike hematite.
What it means for you
The moon is in Scorpio today. Carry black tourmaline. It is a silicate. In old stories it is the stone for when the problem is closeness, not heat.
You know what this one would do for you. You just don't have it.
Black Tourmaline for every sign
Aries
The physics is genuine.
Schorl, hard enough to scratch a knife blade, growing as three-sided rods with striations running the length of the crystal rather than across it. Squeeze it or heat it and it develops a real electrical charge. The physics is genuine. Everything built on top of the physics is not.
Taurus
Common as gravel in pegmatite country.
Iron-rich tourmaline, common as gravel in pegmatite country, and hard enough to scratch a knife. The rods have a rounded triangular cross-section and coarse striations running the length rather than across, which identifies them instantly. It is the most-recommended protective stone and the cheapest.
Gemini
The charge is measurable and means nothing about your wifi.
Three-sided in cross-section, which nothing else in the case is, and striated along its length where quartz is striated across. Squeeze it or heat it and it develops a real electrical charge. That charge is measurable and it means nothing whatsoever about your wifi.
Cancer
Pressure is the only thing that gets a response.
Squeeze it and it produces a measurable electrical charge, which is what piezoelectric means and is the only true claim in the marketing. The crystals are three-sided in section with striations running the length, the opposite of quartz. Pressure is the only thing that gets a response out of it.
Leo
Squeeze it or heat it and it develops a charge.
Schorl, iron-rich, hard enough to scratch a knife blade. The crystals carry deep striations running lengthwise, the exact opposite of quartz, and the cross-section is a rounded triangle that nothing else common produces. Squeeze it or heat it and it develops a charge. That part is real physics.
Virgo
Striations run lengthwise, the exact opposite of quartz.
The cross-section is a rounded triangle and the striations run the length of the crystal, which is exactly the opposite of quartz. That pair of features identifies it across a room. The pyroelectricity is real and measurable. The EMF protection sold alongside it has nothing behind it at all.
Libra
Positive at one end, negative at the other.
Schorl, with a rounded-triangular cross-section no other common mineral has and coarse striations running the length of the crystal instead of across it. Warm it and a charge develops at opposite ends, positive at one, negative at the other. Dutch traders used that to pull ash out of pipes.
Scorpio
The physics is real. The EMF marketing is not.
Schorl grows as prisms with a rounded triangular cross-section and coarse striations running the length, the reverse of quartz. It is genuinely pyroelectric, so Dutch traders warmed it to pull ash out of pipes and called it aschentrekker. The physics is real and the EMF marketing is not.
Sagittarius
The physics is real and the EMF marketing is not.
Heat it or squeeze it and it develops an electrical charge, which is why Dutch traders used it to pull ash out of meerschaum pipes and called it aschentrekker. The lengthwise striations and triangular cross-section identify it in a second. The physics is real and the EMF marketing is not.
Capricorn
The physics is real and the reading is not.
Rounded-triangular in section with coarse striations running the length of the crystal, which is the exact opposite of quartz. It is genuinely pyroelectric, so a warmed crystal develops a charge, and Dutch traders used it to pull ash out of pipes and called it aschentrekker. The physics is real and the reading is not.
Aquarius
The EMF marketing has nothing to do with the physics.
Heat it or squeeze it and it develops an electrical charge, which is genuine physics and the reason Dutch traders used lumps of it to pull ash from their pipes. The cross-section is rounded triangular and the striations run lengthwise, the opposite of quartz. The EMF marketing has nothing to do with the physics.
Pisces
Handed most often to people who absorb rooms.
Squeeze it or warm it and it develops an electrical charge, which is real and measurable and has nothing to do with the EMF claims. Dutch traders used lumps of it to draw ash out of pipes and called it aschentrekker. It is handed most often to people who absorb rooms.
Correspondences
What tradition attaches to this stone. Folklore, not chemistry.
Element
earth
Planet
Saturn
Chakra
root
Signs
capricorn, scorpio, libra
What tradition says
In crystal lore, black tourmaline is associated with warding, with grounding excess energy and with protection from hostile intent; it is also widely and unsupportedly marketed for 'EMF protection'.
Care
- Water is fine. Dry it afterwards.
- Hard and durable, but crystals fracture across the prism if dropped and long ones snap easily. Water and salt are fine.
Common questions
What does black tourmaline mean?
Black Tourmaline is carried for protection, grounding and boundaries. The stone everyone hands you for protection.. Tradition links it to the root chakra.
Is black tourmaline real or fake?
Black Tourmaline is not faked often, but it is still worth checking. Lengthwise striations plus a triangular section identifies tourmaline instantly. It scratches glass (7, 7.
Can black tourmaline go in water?
A short rinse is fine for black tourmaline, then dry it.
Common · opaque black, blue-black, brownish black
Where this leads
This stone belongs to
Related crystals
FOR ENTERTAINMENT AND REFLECTION. NOT MEDICAL, PSYCHOLOGICAL, FINANCIAL OR LEGAL ADVICE. How this works