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Celestial Gram, Blue Sapphires


Sale price1.740,00 €

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Like stars held in suspension, the Celestial Grams necklace reveals the poetic purity of our signature motif in a more aerial form.


Crafted in 18k rhodium-plated white gold, it rests delicately on the chest, following the body's every movement. Each sapphire, bezel-set with airy precision, seems to hover — embraced by light.

A tribute to the invisible structures of marine life, and more specifically to the diatom Grammatophora,  and the cosmic harmony between sea and sky, this design draws on the diatom Grammatophora to explore balance, rhythm, and radiance — letting each stone breathe, shine, and resonate like a star born of the ocean.

Gemstones & Gold

  • Blue Sapphires: 0.14 ct

  • Gold weight (pendant): 0.45 g

  • Chain length: 38–40 cm or 40–42 cm

A jewel to compose for yourself
Entirely handmade in Paris using traditional fine jewellery techniques.
As with every piece from Sœur & Mer, this necklace can be customised: choice of gold colour, number of “grams”, stone selection.

Environment protection
Sœur & Mer supports the Fondation Tara Océan, dedicated to the preservation of marine biodiversity and the protection of invisible ocean life.

A return to the source, to sensuality, to femininity

Each stone in our “Exceptional Stones” collection is meticulously selected at source, from the bowels of the Earth.

Sublimated by the expertise of our craftsmen, these gems become one-of-a-kind creations, designed to be treasured for a lifetime, a precious heirloom to be passed down from generation to generation.

An ode to the fabulous beauty of nature

Choosing a piece from Sœur & Mer means choosing an exceptional piece of jewelry, with stones like works of art in nature. Whether to please yourself or to offer an unforgettable gift to a woman dear to your heart, this ring symbolizes the beauty of your bond, the promise of eternal love.

Treat yourself to the experience of a unique, timeless creation, where every detail reflects the excellence of fine jewelry.

Gift and jewelry box

Many of you choose to gift Sœur & Mer jewelry to the dear women in your life : your daughter, mother, sister, or soul mate.

At Sœur & Mer, we take great care to make this moment truly magical.

Let us know if it's a gift :

  • Rings can be personnalized with an engraving that immortalizes life's precious moments.
  • You can also tell us if you would like to include a personalized note. 

The jewelry box also is made in France. The jewelry is carefully protected by tissue paper, and a satin organza ribbon adds the perfect finishing touch to the packaging.

Delivery & returns

We offer delivery for all orders placed with our partner services in France and abroad. Delivery times may vary from 2 to 4 weeks, depending on stone availability and the originality and complexity of the model.

Information concerning delivery times will be communicated to you at the time of payment, after an appointment has been made. If you change your mind, you have 15 days to notify us and make your return.

Contact us

Do you need additional information ?

You can write us a message with your contact details. We will get back to you as soon as we can.

Celestial Gram, Blue Sapphires
Celestial Gram, Blue Sapphires Sale price1.740,00 €

Manufacturing

Our Paris workshop manufactures to order, with a maximum lead time of 3 weeks.

Customer service

We are available to answer all your questions.

Secure payment

All our transactions are secure.

Feel the vital link that unites us with the living world, the sea and the land.

Discover Sœur & Mer

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Like stars held in suspension, the Celestial Grams necklace reveals the poetic purity of our signature motif in a more aerial form.


Crafted in 18k rhodium-plated white gold, it rests delicately on the chest, following the body's every movement. Each sapphire, bezel-set with airy precision, seems to hover — embraced by light.

A tribute to the invisible structures of marine life, and more specifically to the diatom Grammatophora,  and the cosmic harmony between sea and sky, this design draws on the diatom Grammatophora to explore balance, rhythm, and radiance — letting each stone breathe, shine, and resonate like a star born of the ocean.

Gemstones & Gold

  • Blue Sapphires: 0.14 ct

  • Gold weight (pendant): 0.45 g

  • Chain length: 38–40 cm or 40–42 cm

A jewel to compose for yourself
Entirely handmade in Paris using traditional fine jewellery techniques.
As with every piece from Sœur & Mer, this necklace can be customised: choice of gold colour, number of “grams”, stone selection.

Environment protection
Sœur & Mer supports the Fondation Tara Océan, dedicated to the preservation of marine biodiversity and the protection of invisible ocean life.

A return to the source, to sensuality, to femininity

Each stone in our “Exceptional Stones” collection is meticulously selected at source, from the bowels of the Earth.

Sublimated by the expertise of our craftsmen, these gems become one-of-a-kind creations, designed to be treasured for a lifetime, a precious heirloom to be passed down from generation to generation.

An ode to the fabulous beauty of nature

Choosing a piece from Sœur & Mer means choosing an exceptional piece of jewelry, with stones like works of art in nature. Whether to please yourself or to offer an unforgettable gift to a woman dear to your heart, this ring symbolizes the beauty of your bond, the promise of eternal love.

Treat yourself to the experience of a unique, timeless creation, where every detail reflects the excellence of fine jewelry.

Gift and jewelry box

Many of you choose to gift Sœur & Mer jewelry to the dear women in your life : your daughter, mother, sister, or soul mate.

At Sœur & Mer, we take great care to make this moment truly magical.

Let us know if it's a gift :

  • Rings can be personnalized with an engraving that immortalizes life's precious moments.
  • You can also tell us if you would like to include a personalized note. 

The jewelry box also is made in France. The jewelry is carefully protected by tissue paper, and a satin organza ribbon adds the perfect finishing touch to the packaging.

Delivery & returns

We offer delivery for all orders placed with our partner services in France and abroad. Delivery times may vary from 2 to 4 weeks, depending on stone availability and the originality and complexity of the model.

Information concerning delivery times will be communicated to you at the time of payment, after an appointment has been made. If you change your mind, you have 15 days to notify us and make your return.

Contact us

Do you need additional information ?

You can write us a message with your contact details. We will get back to you as soon as we can.