Know what you have.
Photograph a gem or a piece of jewelry and get ranked possible matches, with a clear explanation of what a photo can and can't tell you.
Photo: Logan Sapphire, Smithsonian Institution (Chip Clark), public domain
We tell you what a photo can show, and what it can't.
Three steps from your jewelry box to a clear answer.
Photograph it
Live checks for focus, light and glare help you take a photo worth analyzing.
Review possible matches
Up to three ranked candidates, the features we saw, common lookalikes and the limits of a photo.
Keep a private record
Save pieces with notes, certificates and purchase details. Export an inventory for your insurer.
Could it be glass or CZ? Look for the signs.
A few close-ups and GemID points out visible signs of an imitation, then tells you exactly who can confirm it. We never call a stone real or fake.
- Signs consistent with an imitation
- No visible signs of an imitation
- Can't tell from these photos
Start with 100 free scans.
Retakes and failed scans never count. After that, add a scan pack or subscribe, whichever suits how often you scan. Your collection stays free.
Help shape GemID.
Missing a stone, a feature, or an easier way to do something? Tell us. We read every message, and the best ideas end up in the app.
Opens your email app. Please don't include card numbers or passwords.
Questions? The help center has answers.
Taking better photos, reading results, certificates, purchases and privacy.