Move across to turn
Model 01
From €250,00 EURRounded contours connect a sequence of openings. Follow the surface around the band to see where an edge becomes an inner wall.
View Model 01Other statesof matter
Two sculptural rings in steel and titanium, designed to be explored from every angle.
Choose your form
A continuous surface or an open structure. Start with the one you want to turn in your hand.
Move across to turn
Model 02
From €250,00 EURThe silhouette changes with the viewing angle. Broad faces meet narrow bridges, while the openings give the structure its rhythm.
View Model 02Digital visualizations of the original designs.Choosing a ring and finding your size
The material has a past. The form is a choice.
The iron in steel and the titanium in our rings were formed through stellar processes, before the Earth existed.
Ex Sidere — “from a star” — brings that distant history into something close: a ring defined by its surfaces, openings, and the way it changes in the light.
Read about the matter
Twelve seconds with the form
An edge becomes an opening. A shadow reveals a curve. A short, silent study of Model 01.
Digital visualization. Plays only when you choose.
Before you choose
The details that matter once a form catches your eye.
How do I find my size?
Have the intended finger measured with a ring sizer, ideally using a band of similar width. A ring’s width and inner shape affect its fit, so a familiar size is a starting point rather than a guarantee.
Ex Sidere sizes run from 1 to 12. See the size guide for Cartier equivalents and measurements.
Steel or titanium?
For the same volume, titanium is lighter than stainless steel. Steel gives a form more weight; titanium reduces it. The exact weight and surface character also depend on the alloy, size, geometry and finish.
Are these photographs?
No. The images and film are digital visualizations made from our ring designs. They let you inspect the geometry and intended matte surface. Colour and surface appearance depend on lighting and rendering.