Primo Jewelry: Ring Sizer

Primo Technology Ltd.

In-app purchases

About this app

Primo Jewelry is a jewelry identifier, jewelry appraisal tool and ring sizer in one app. Snap one photo of any ring, necklace, bracelet, watch, antique piece or loose gemstone and the AI tells you what it is and what it is worth.

WHAT IS MY JEWELRY WORTH?
Take a single photo and the AI identifies the piece (type, metal, karat, and stones), then estimates its value using real sold prices from online marketplaces, not guesswork. You get an estimated resale value, a price range, and the comparable sold listings behind it.

RING SIZER
No printable strips and no guessing. Place a standard bank card next to your ring or finger, take two photos, and Primo Jewelry measures the inner diameter and returns your US size plus UK, EU, and JIS equivalents, circumference, and neighbouring sizes.

KEY FEATURES
- AI jewelry identifier for rings, necklaces, bracelets, watches, and gemstones
- Watch identifier and antique jewelry value estimates
- Jewelry appraisal based on comparable sold listings, not asking prices
- Camera ring sizer with US, UK, EU, and JIS sizes
- Estimated price range and recent sold comparables
- Local history of every scan and measurement
- Choose your currency
- No account required, your photos stay private

WHO IT IS FOR
- Anyone who needs a ring size fast, for an engagement or a gift
- Owners gauging what a piece is worth before selling or insuring
- Resellers and estate sellers pricing jewelry before listing
- Collectors valuing inherited, antique, or vintage pieces

Primo Jewelry gives estimates for guidance only. It is not a certified appraisal or professional ring sizing. Always confirm with a jeweler when accuracy matters.

What’s new

Bug fixes.