The facts
What leuco Garnet actually is
Leuco Garnet is classified as grossular (garnet group), with the composition Ca₃Al₂(SiO₄)₃. It crystallises in the cubic system.
Refractive index 1.730–1.745. Specific gravity around 3.55–3.65. Cleavage: none. Those three numbers separate it from most of what imitates it.
Where leuco Garnet comes from
Leuco Garnet is produced at Jeffrey Mine, Asbestos, Quebec, Canada, Chihuahua, Mexico and Tanzania.
The locality is part of the description, not a footnote — two stones of the same weight from two of these places are not the same stone.
How leuco Garnet is treated
Untreated. A curiosity for collectors; isotropic and singly refractive, which separates it from most colourless gems at the polariscope.
Treatment changes value, sometimes by a multiple, so it belongs in the description before the price and not after the sale.
What leuco Garnet is confused with
In the trade leuco Garnet is most often mistaken for, or substituted by, Colourless zircon, Colourless topaz, Glass or Colourless sapphire.
The separation is rarely a matter of opinion: refractive index 1.730–1.745 and specific gravity 3.55–3.65 settle most of it in a minute, and magnification settles the rest.
What leuco Garnet is used for
Demand for leuco Garnet comes from mineral collecting and jewellery, which is why one price per carat never covers it.
We quote each application in the unit that trade actually buys in, by the specimen or by the carat.
Durability and care
Leuco Garnet is 7–7.5 on the Mohs scale, with none cleavage.
With no cleavage plane to worry about, the practical limit is abrasion rather than breakage, and it takes daily wear well.
Warm water, mild soap and a soft brush. Avoid ultrasonic cleaners on anything fracture-filled, stabilised, dyed or visibly included.
What leuco Garnet costs
As a guide, leuco Garnet trades around $10–80/ct.
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 leuco Garnet treated, and how?
Untreated. A curiosity for collectors; isotropic and singly refractive, which separates it from most colourless gems at the polariscope.
Where does leuco Garnet come from?
Jeffrey Mine, Asbestos, Quebec, Canada, Chihuahua, Mexico and Tanzania. Origin affects price, so we name the locality rather than the country on every quote.
Is leuco Garnet hard enough to wear every day?
Yes. At 7–7.5 on the Mohs scale with no cleavage plane, it handles daily wear well. The practical limit is gradual abrasion rather than chipping.
How much does leuco Garnet cost?
Indicatively $10–80/ct. 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 leuco Garnet confused with?
Most often Colourless zircon, Colourless topaz, Glass and Colourless sapphire. A refractive index of 1.730–1.745 and a specific gravity near 3.55–3.65 separate it quickly.
Related stones
Looking for leuco garnet?
Tell us the size, the quality and what it is for. We source it, photograph it and quote it — with the locality named.
Ask about leuco garnet