The facts
What strontium Titanate actually is
Strontium Titanate is classified as synthetic perovskite-structure oxide, with the composition SrTiO₃. It crystallises in the isometric system.
Colour comes from colourless; the spectacular fire comes from a dispersion of 0.190, more than four times that of diamond, which is also what a laboratory looks at when it is asked whether a colour is natural.
Refractive index 2.409. Specific gravity around 5.11–5.13. Cleavage: none. Those three numbers separate it from most of what imitates it.
Where strontium Titanate comes from
Strontium Titanate is produced at Verneuil flame-fusion grown, historically in the USA and Switzerland.
That is the whole list. A single source makes supply fragile and makes any claim of a second origin worth questioning.
How strontium Titanate is treated
Synthetic only — natural SrTiO₃ (tausonite) exists but never in gem sizes. As a diamond simulant it fails on hardness: it abrades within months of ring wear. Its excessive dispersion gives an unnatural rainbow flash that identifies it across a room.
Treatment changes value, sometimes by a multiple, so it belongs in the description before the price and not after the sale.
What strontium Titanate is confused with
In the trade strontium Titanate is most often mistaken for, or substituted by, Diamond, Cubic zirconia, Sphene or Zircon.
The separation is rarely a matter of opinion: refractive index 2.409 and specific gravity 5.11–5.13 settle most of it in a minute, and magnification settles the rest.
What strontium Titanate is used for
Demand for strontium Titanate comes from jewellery, mineral collecting and technical and precision components, which is why one price per carat never covers it.
We quote each application in the unit that trade actually buys in, by the carat, by the specimen or by the piece.
Durability and care
Strontium Titanate is 5–6 on the Mohs scale, with none 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 strontium Titanate costs
As a guide, strontium Titanate trades around 10–60 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 strontium Titanate treated, and how?
Synthetic only — natural SrTiO₃ (tausonite) exists but never in gem sizes. As a diamond simulant it fails on hardness: it abrades within months of ring wear. Its excessive dispersion gives an unnatural rainbow flash that identifies it across a room.
Where does strontium Titanate come from?
Verneuil flame-fusion grown, historically in the USA and Switzerland. That is the only commercial source.
Is strontium Titanate hard enough to wear every day?
Not really. At 5–6 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 strontium Titanate cost?
Indicatively 10–60 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 strontium Titanate confused with?
Most often Diamond, Cubic zirconia, Sphene and Zircon. A refractive index of 2.409 and a specific gravity near 5.11–5.13 separate it quickly.
What is strontium Titanate used for besides jewellery?
mineral collecting and technical and precision components. Each of those trades buys it in a different form and a different unit.
Related stones
Looking for strontium titanate?
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 strontium titanate