Jewellery identifier
What's it worth?
Photograph a ring, a chain, a locket. Gemmo reads the hallmark, works out the purity, and prices the metal against today's spot market.
Download on the App StoreRequires iOS 17. Three scans free.
How it works
Three taps, one number
Photograph the piece
A ring, a chain, a locket — one shot of the whole thing. You don't have to hunt for the stamp first.
Gemmo reads the mark
It finds the hallmark, decodes the purity — 585, 750, 925 — and tells you what those numbers actually mean.
Priced against today's spot
Melt value is worked out from live precious-metal prices in your own currency. Not last month's, not a guess.
The mark
Every real piece carries one
Precious metal is stamped with its purity — inside a ring band, on a clasp, on the back of a pendant. It is the one piece of hard evidence a piece of jewellery carries about itself, and most people have never looked for it.
Gemmo knows where to look and what the numbers mean. When it can't read a stamp it says so rather than inventing one, and you can type it in yourself.
Honest by design
Estimates, not appraisals
Gemmo values the metal, against a live spot price, and tells you the range. It is a confident starting point you can verify — not a certified appraisal, and not an offer.
Spot is the ceiling
A buyer pays under spot — they have to refine the metal and make a margin. Gemmo says so on the price itself, rather than letting you find out at the counter.
Metal only
Gemstones, brand and craftsmanship are often worth far more than the gold. Gemmo doesn't price them, and doesn't pretend to.
No dark patterns
No countdowns, no fake scarcity, no invented reviews. Three scans free, prices in your own currency, cancel in two taps.