I · At the source
Registered
Every piece is described once, as it was listed and sold: its metal and hallmarks, its stones, how it measures, how it looks. It's given a Nº of its own.
An independent registry for fine jewelry & unique pieces
Every piece,on record.
Have the card in hand? Hold your phone to it instead.
Like a title, or a deed
A car has a title.A house has a deed.A piece worth keeping has a certificate.
Sphere keeps that certificate, apart from whoever made, sold or now owns the piece.
How a piece comes to be on record
One certificate, from the bench to your hands.
Every certificate follows the same path. It's written once, sealed, and then it travels with the piece.
II · Before it ships
Sealed
Before the piece ships, its certificate is sealed. From then on it stays exactly as it was issued, ready for whoever holds the piece next.
III · Along with the piece
Carried
The piece arrives with its Sphere Card. Hold your phone to the card and the certificate opens. No app needed.
IV · In your name
Claimed
On your first tap, add your name and the certificate is issued to you. It stays with the piece.
What a certificate holds
Every detail, as listed and sold.
A certificate holds the description of a piece as it was listed and sold: its metal and hallmarks, its stones, how it measures and how it looks. Sphere keeps it apart from whoever made or sold the piece.
Listed
Every detail comes from the listing the piece was sold under.
Issued
Sphere issues the certificate once, when the piece is registered.
Sealed
Once sealed, the certificate stays exactly as it was issued.
Sphere keeps the certificate of every piece it registers.
Sphere certificate
SpecimenSphere Nº
7Q4XK-M2B9D
- Piece
- Diamond hoop earrings, pair
- Metal
- 18k yellow gold
- Hallmarks
- “750” and maker's mark, inside each hoop
- Stones
- 24 round brilliant diamonds · 0.48 ct total · G–H, VS
- Measures
- 24 mm diameter · 2.1 mm wide
- Weight
- 4.6 g
- Images
- Registered
- 12 March 2026
- Sealed
- 14 March 2026
- Issued by
- Sphere
The Sphere Card
It comes with the piece.
Every piece on record ships with a Sphere Card in matte bone or brushed steel. Each card carries one Nº and opens one certificate. Keep it with the piece.
Misplaced the card? Your Nº is on the paper certificate too.
For makers, jewelers & marketplaces
Put your pieces on record.
Sphere registers pieces at the source, so each one leaves the bench with its certificate sealed and its card in the box.
MakersRegister each piece as it's finished.
JewelersHand over a card with every piece you sell.
MarketplacesShip pieces that carry their own certificate.