The facts
What talc (Industrial) actually is
Mineralogically, talc (Industrial) is the softest mineral on the Mohs scale, a hydrated magnesium sheet silicate, valued industrially for platyness, softness, inertness and hydrophobicity — Mg3Si4O10(OH)2, crystallising in the monoclinic system.
The colour is caused by white to pale green and grey; whiteness and brightness are the key commercial grading parameters. That is worth knowing because it determines what heating, light and time can and cannot do to the stone.
A refractometer reads 1.539-1.589, and the specific gravity sits near 2.58-2.83; cleavage is perfect basal - the reason it feels soapy.
Where talc (Industrial) comes from
The recognised sources are Trimouns, Luzenac, Ariege, France - the world's largest talc mine, Three Springs, Western Australia, Haicheng, Liaoning Province, China, Val Chisone and Pinerolo, Piedmont, Italy (the classic white talc) and Gouverneur, New York and Montana, USA.
Origin affects price in this material, so we name the locality on every quote rather than the country. "African" or "Asian" tells a buyer nothing.
How talc (Industrial) is treated
Milled, air-classified and micronised; nothing chemical. Uses: paper and plastics filler, ceramics, paint, roofing, rubber, pharmaceutical excipient, and cosmetics. THE CENTRAL ISSUE IS ASBESTOS: talc and asbestiform tremolite and anthophyllite form in the same geological settings, and historic New York and Vermont talcs contained amphibole asbestos. This has produced extensive litigation and multi-billion-dollar settlements over cosmetic talc, the US FDA now runs a talc testing programme, and IARC in 2024 classified talc as probably carcinogenic to humans. Cosmetic and pharmaceutical grades must be certified asbestos-free; this is a live commercial and legal factor, not a historical footnote.
None of this is a problem when it is said out loud. It becomes one the moment it is left out.
What talc (Industrial) is confused with
The usual confusions are Pyrophyllite (very similar, aluminous rather than magnesian), Kaolin and calcium carbonate as competing fillers, Chlorite and Soapstone rock.
The separation is rarely a matter of opinion: refractive index 1.539-1.589 and specific gravity 2.58-2.83 settle most of it in a minute, and magnification settles the rest.
What talc (Industrial) is used for
Talc (Industrial) is bought by heavy industry, cosmetics, carving and sculpture and kitchen and table — and each of those trades wants a different form of the same material.
We quote each application in the unit that trade actually buys in, by the tonne, by the block or by the piece.
Durability and care
Talc (Industrial) is 1 on the Mohs scale, with perfect basal - the reason it feels soapy cleavage.
Below about 5.5 a stone will be scratched by ordinary household dust, which is largely quartz. That does not make it unusable — it makes it a pendant, an earring or an object rather than a ring worn every day.
Warm water, mild soap and a soft brush. Avoid ultrasonic cleaners on anything fracture-filled, stabilised, dyed or visibly included.
What talc (Industrial) costs
Indicative pricing for talc (Industrial) is $100-400 per tonne for filler grades; high-brightness, cosmetic and pharmaceutical grades $500-1,500 per tonne.
That is a range, not a quote. Colour, size, clarity, cut and origin move the figure a long way inside it, and the only honest price is one given against a specific stone. Send us what you need and we will price it.
Questions
Is talc (Industrial) treated, and how?
Milled, air-classified and micronised; nothing chemical. Uses: paper and plastics filler, ceramics, paint, roofing, rubber, pharmaceutical excipient, and cosmetics. THE CENTRAL ISSUE IS ASBESTOS: talc and asbestiform tremolite and anthophyllite form in the same geological settings, and historic New York and Vermont talcs contained amphibole asbestos. This has produced extensive litigation and multi-billion-dollar settlements over cosmetic talc, the US FDA now runs a talc testing programme, and IARC in 2024 classified talc as probably carcinogenic to humans. Cosmetic and pharmaceutical grades must be certified asbestos-free; this is a live commercial and legal factor, not a historical footnote.
Where does talc (Industrial) come from?
Trimouns, Luzenac, Ariege, France - the world's largest talc mine, Three Springs, Western Australia, Haicheng, Liaoning Province, China, Val Chisone and Pinerolo, Piedmont, Italy (the classic white talc) and Gouverneur, New York and Montana, USA. Origin affects price, so we name the locality rather than the country on every quote.
Is talc (Industrial) hard enough to wear every day?
Not really. At 1 on the Mohs scale it is softer than the quartz dust in ordinary household dirt, so it scratches with wear. It suits pendants, earrings and objects better than a daily ring.
How much does talc (Industrial) cost?
Indicatively $100-400 per tonne for filler grades; high-brightness, cosmetic and pharmaceutical grades $500-1,500 per tonne. Colour, size, clarity and origin move the price a long way within that, so treat it as a range and ask for a quote against a specific stone.
What is talc (Industrial) confused with?
Most often Pyrophyllite (very similar, aluminous rather than magnesian), Kaolin and calcium carbonate as competing fillers, Chlorite and Soapstone rock. A refractive index of 1.539-1.589 and a specific gravity near 2.58-2.83 separate it quickly.
What is talc (Industrial) used for besides jewellery?
heavy industry, cosmetics, carving and sculpture and kitchen and table. Each of those trades buys it in a different form and a different unit.
Related stones
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Tell us the size, the quality and what it is for. We source it, photograph it and quote it — with the locality named.
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