The facts
What jeremejevite actually is
The species behind jeremejevite is jeremejevite, Al₆B₅O₁₅(F,OH)₃; it forms in the hexagonal system.
Iron is responsible for the colour — and the chromophore, not the name, is what decides whether a colour is stable.
On the instruments it reads a refractive index of 1.639–1.653 and a specific gravity of about 3.28–3.31, with none cleavage.
Where jeremejevite comes from
Commercial material comes from Erongo and Cape Cross, Namibia, Pamir, Tajikistan and Myanmar.
Different localities give different colour and different clarity, and the trade prices them differently. We state which one.
Is jeremejevite treated?
None.
That makes disclosure simple: there is nothing to declare. It also means a seller offering a "treated" version of this material is offering something else.
What jeremejevite is confused with
Watch for Aquamarine, Blue topaz and Euclase — these are what turn up sold under this name.
The separation is rarely a matter of opinion: refractive index 1.639–1.653 and specific gravity 3.28–3.31 settle most of it in a minute, and magnification settles the rest.
What jeremejevite is used for
The trades that buy jeremejevite are mineral collecting. They do not want the same thing, and they do not pay in the same unit.
We quote each application in the unit that trade actually buys in, by the specimen.
Durability and care
Hardness 6.5–7.5; cleavage none. That combination decides what it can safely be set into.
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 jeremejevite costs
Expect roughly $1,000–10,000/ct, depending on quality.
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 jeremejevite treated?
None.
Where does jeremejevite come from?
Erongo and Cape Cross, Namibia, Pamir, Tajikistan and Myanmar. Origin affects price, so we name the locality rather than the country on every quote.
Is jeremejevite hard enough to wear every day?
Yes. At 6.5–7.5 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 jeremejevite cost?
Indicatively $1,000–10,000/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 jeremejevite confused with?
Most often Aquamarine, Blue topaz and Euclase. A refractive index of 1.639–1.653 and a specific gravity near 3.28–3.31 separate it quickly.
Related stones
Looking for jeremejevite?
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 jeremejevite