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Fine Jewelry

Cocktail Diatoms

Fine Jewelry

Stellar Diatoms

Fine Jewelry

Grams of Diatoms

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

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Colourful treasures for every season

LET SUMMER'S COULOURS LINGER

The savoir-faire of Parisian high jewellery

Close to home, exceptional Parisian ateliers carry forward the traditions of high jewellery, bringing to life our precious 18-carat gold collections and your bespoke creations.

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

Book an appointment

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.

Donations for the Ocean

NATURAL DIAMONDS & PRECIOUS GEMSTONES

GIA certificates for your diamonds, RJC certification, and sourcing across Europe according to your criteria.

RECYCLED 18-CARAT GOLD

Fabriqué à Paris label, made to order, and the possibility of giving a second life to your existing 18-carat gold jewellery.

FOUNDRIES & ATELIERS IN PARIS

Exceptional craftsmanship in our Parisian high-jewellery ateliers.

ADDITIONNAL SERVICES

Complimentary resizing and a refresh with polishing every two years are included.

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.”