The Invisible Made Visible
Inspired by the fascinating geometric forms of a microscopic alga, our creations reveal the beauty of the ocean’s microscopic living world, essential to life.

Coscinodicus

Cocktail ring n°3
Discover1,2,3… stacking
Iconic jewellery
A creation that is uniquely yours
Engagement rings & Wedding bands

In the heart of Paris, discover Sœur & Mer in boutiques, at our showroom, or during a private appointment with the designer.

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.

Jonathan, Bordeaux
“The designer created a magnificent engagement ring, taking all our wishes into account… from the initial 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 our hearts!”

Jean-Jacques, Geneva
“There is an almost imperceptible breath within your jewellery, like an echo of life itself. You give the invisible substance, light and breath… and suddenly, the infinitely small becomes a treasure.”

























