


Celestial Gram, Blue Sapphires
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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
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Blue Sapphires: 0.14 ct
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Gold weight (pendant): 0.45 g
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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.
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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.

Feel the vital link that unites us with the living world, the sea and the land.
Discover Sœur & Mer