Meet the Signity stone.
All sparkle, no secrets.
Every white stone on this site is a Signity stone: lab-made cubic zirconia with a fine-jewellery cut. Here’s how it stacks up against a diamond — the wins, and the one weak spot.
What you’re buying.
Signity is a specialist gem-cutting house. Its stones are cubic zirconia — a crystal grown in a lab — cut to the same ideal proportions used for the finest diamonds. Every Signity stone comes out colourless and consistent.
It’s a different material from a diamond, at a small fraction of the price, with a look that’s hard to tell apart. And the cut matters: a precision-cut Signity stone is clearly brighter than the everyday cubic zirconia in most fashion jewellery. That’s the difference you’re paying for.
Four numbers that decide it.
| Property | Signity stone | Diamond |
|---|---|---|
| HardnessMohs scale — resistance to being scratched | 8.5 | 10 |
| FireDispersion — how much white light is split into colour | 0.060 | 0.044 |
| BrillianceRefractive index — how much light is returned white | 2.176 | 2.417 |
| WeightSpecific gravity — density | 5.6 – 6.0 | 3.52 |
Hardness
A diamond is the hardest thing in nature. A Signity stone is tough too, but after years of daily wear it can pick up fine scratches that soften its sparkle. Take rings off for rough work and it stays bright for years.
Fire
About a third more. Fire is the rainbow flash you see when a stone moves — and a Signity stone has more of it than a diamond. Side by side, most people pick the Signity stone as the sparklier one.
Brilliance
A diamond sends back a little more white light. With an ideal cut the gap gets small — which is exactly why we only use precision-cut Signity stones.
Weight
A Signity stone is about 1.7 times heavier than a diamond of the same size. That’s why we give stone sizes in millimetres, not carats — a carat figure would describe a smaller stone than the one you get.
Three things worth knowing.
Made for wearing, not banking.
A Signity stone is for enjoying, not investing — it has no resale market. Honestly, most jewellery is the same; we just say it out loud.
A little care goes a long way.
Take rings off before the gym, the garden or the washing-up. A quick clean keeps the sparkle sharp for years — our care page has the two-minute routine.
No certificate needed.
Certificates prove how rare a natural stone is. A Signity stone is made to one consistent standard, so every stone is as good as the last.
We call it what it is.
Every white stone here is named as a Signity stone or cubic zirconia — in the product name, the details and the information we share with search engines. It’s what the Consumer Protection Act 2019 asks for, and it’s simply the right thing to do.
Spot a listing that says anything else? Tell us and we’ll fix it fast. Everyday cubic zirconia is everywhere; an ideal-cut Signity stone is a step up — and we’re proud to name it.