The Invisible Made Visible
Each jewel captures the delicate beauty of microscopic marine life — a vital, invisible world essential to all life on Earth.
Colorful Highlights
Les Diatomées Stellaires
Minimalist Chic
Grams of Diatoms
Diatoms in Pure Form
The Diatoms
In the Heart of Paris
Our Parisian brand is delighted to welcome you by appointment in the heart of Paris.
Celebrating our mothers, daughters, sisters and friends
…with meaningful gifts
Exquisite artisanal craftsmanship for jewels conceived as heirlooms — made to be passed down through generations. Each piece can be personalized on request, from the choice of gold to the selection of stones.
Her first jewelry piece
Her first jewelry piece
Sœur & Mer supports
Tara Océan
Sœur & Mer supports the Tara Ocean Foundation : together we contribute to protecting the Ocean and the plankton essential to life on earth, producing nearly two thirds of oxygen on Earth.
Feeling the vital link that unites us with the living world, the sea and the land.
Discover Sœur & MerThere is a breath in your jewelry — subtle, almost imperceptible — like an echo of life itself. You give the invisible a form, a light, a soul… and suddenly, the infinitesimal becomes a treasure.
Jean-Jacques, Geneva
“The designer created a magnificent engagement ring, taking into account all our wishes — from design to delivery in Bordeaux, in just over two weeks! My fiancée was dazzled by the beauty of the ring and the brilliance of the stone. Thank you from the bottom of my heart!”
Jonathan, Bordeaux
“I have never seen such original pieces of jewelry. Then I discovered they represented the microscopic plankton producing more than half our oxygen on Earth . I really love the concept ! »
Harry, Paris