The facts
What narsarsukite actually is
Mineralogically, narsarsukite is sodium titanium silicate — Na₂(Ti,Fe³⁺)Si₄(O,F)₁₁, crystallising in the tetragonal system.
The colour is caused by fe³⁺ with Ti gives honey-yellow to yellow-green. That is worth knowing because it determines what heating, light and time can and cannot do to the stone.
A refractometer reads 1.610–1.647, and the specific gravity sits near 2.72–2.83; cleavage is good in one direction.
Where narsarsukite comes from
The recognised sources are Narsarsuk, Kujalleq, Greenland, Mont Saint-Hilaire, Québec, Canada and Sweetgrass Hills, 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 narsarsukite is treated
Untreated. An agpaitic-pegmatite rarity; a few clean faceted stones have come from Montana and Greenland.
None of this is a problem when it is said out loud. It becomes one the moment it is left out.
What narsarsukite is confused with
The usual confusions are Sphene, Citrine and Chrysoberyl.
The separation is rarely a matter of opinion: refractive index 1.610–1.647 and specific gravity 2.72–2.83 settle most of it in a minute, and magnification settles the rest.
What narsarsukite is used for
Narsarsukite is bought by mineral collecting — 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 specimen.
Durability and care
Narsarsukite is 6–7 on the Mohs scale, with good in one direction 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 narsarsukite costs
Indicative pricing for narsarsukite is Faceted stones 150–600 USD/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 narsarsukite treated, and how?
Untreated. An agpaitic-pegmatite rarity; a few clean faceted stones have come from Montana and Greenland.
Where does narsarsukite come from?
Narsarsuk, Kujalleq, Greenland, Mont Saint-Hilaire, Québec, Canada and Sweetgrass Hills, Montana, USA. Origin affects price, so we name the locality rather than the country on every quote.
Is narsarsukite hard enough to wear every day?
Yes. At 6–7 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 narsarsukite cost?
Indicatively Faceted stones 150–600 USD/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 narsarsukite confused with?
Most often Sphene, Citrine and Chrysoberyl. A refractive index of 1.610–1.647 and a specific gravity near 2.72–2.83 separate it quickly.
Related stones
Looking for narsarsukite?
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 narsarsukite