Lumière
a private atelier for iPhone
Design the ring in living light.
A real-time diamond with true fire. A configurator wrapped in liquid glass. The ring, on your hand, before a jeweler ever knows your name.
The material is light
A diamond does three things to light. We do all three.
Catalog apps show you photographs. Lumière renders the stone — live, at sixty frames a second, with the optics of a real cut diamond.
i · Brilliance
White light, returned
Every facet computed in real time. Turn the stone and the light turns with it — no photography, no pre-renders.
ii · Fire
Light, broken into color
Our Metal engine splits the spectrum the way a cut stone does — the flashes of rose, ice, and amber no other app simulates.
iii · Scintillation
The sparkle that moves
Tilt the phone; the stone answers. Sparkle is motion, and motion needs a renderer — not a picture.
The atelier
Platinum or rose. Oval or emerald. Half a carat or five.
Eight cuts, four metals, six settings — and an engraving only the two of you will ever read. A taste of the counter, right here:
Set in the band's inner curve — only the two of you will ever read it.
The loupe
Every atelier keeps one by the counter.
Press and hold in the app, and a lens of liquid glass rises to meet your finger — fire, finish, and setting detail, magnified. Move your pointer below; the loupe will follow.
The loupe is the liquid-glass experience — depth, edge light, and a rim of fire.
The try-on
One photo. Every option.
Photograph your hand once, and try every design you save — the band placed at your finger, the light matched to your room.
On your phone
Placed by sight
Apple's Vision framework traces your hand and sets the band at the base of your ring finger — scaled to your finger, lit by your room. The blurred live camera is the shop's back wall; your world becomes the atelier.
Once, with consent
Finished in the cloud
One optional enhancement pass refines shadow and skin contact for the final export — sent once, encrypted, stored never. You approve every send. Skip it and the on-device render is yours all the same.
Designing a ring is usually a secret. Lumière is built for that: an account is optional — and private by default. No trackers, no public profiles, no way to look anyone up, no photo ever kept.
And when you're bursting to show the co-conspirators — the bridesmaids, the best friend, the inner circle — you share by secret invitation: a direct link, for their eyes only, that quietly expires.
Private by default · optional accounts · invitations that expire · one consented cloud call
The private preview
Be first at the counter.
Lumière opens as a TestFlight preview for iPhone 15 Pro and later. Quiet list, no noise — one note when the light is ready.
We'll write when the light is ready.