"Precious and fine gemstones for handcrafted jewellery on Île d’Oléron"
Origin & Natural Colour
"Every stone chosen for FUSYOM creations is of natural origin and natural colour. Rough or finely faceted, each is selected for maximum brilliance. To ensure the highest quality, FUSYOM works exclusively with a single trusted supplier — a lapidary based in Annemasse, France."
Today, around 9 out of 10 gemstones on the market are heated or treated to alter their original colour, giving them shades that are easier to sell.
Gemstones cut in the countries where they are mined follow local standards, which means being as large as possible since they are sold by weight. They are therefore bigger but less brilliant, because to achieve greater sparkle it is necessary to respect the refractive indices and the critical angles of the cut — which requires removing material.
FUSYOM selects only gemstones cut in France according to the French standard: achieving the brightest stone possible, even if smaller in the end, and, as previously mentioned, always of natural, untreated colour.
"Precious and fine gemstones – Choose the one for your bespoke jewel"
I personally handpick every stone for its beauty and quality. Whether precious (diamond, sapphire, ruby, emerald) or fine (amethyst, quartz, tourmaline, spinel, garnet…), each one is of known origin, natural, untreated, and almost always cut in France.
Every jewel starts with a stone. Explore my selection of authentic gemstones — precious and fine — ready to become the heart of your bespoke creation.
Precious gemstones
Precious gemstones are the rarest and most coveted gems, treasured for their beauty and rarity.
Diamond, sapphire, ruby, and emerald are defined by exceptional brilliance, timeless value, and universal symbolism — enduring through the centuries without ever losing their prestige.
Fine gemstones
Each gemstone has its own character and a singular brilliance, revealed by a cut tailored to its unique qualities.
Chacune possède une personnalité, un éclat unique sublimé par une taille adaptée à ses caractéristiques uniques .
More accessible than precious gemstones, they open the door to original creations — pieces rich in meaning and character.
Choose your gemstone to match your desires
By colour (e.g. the blue of sapphire, the green of emerald, the violet of amethyst…)
By cut (classic, modern, original, bespoke…)
By jewellery style (ring, pendant, wedding band, unique piece)
Authenticity & Traceability
Responsible sourcing
Every stone I use is natural, untreated, and of traceable origin.
Each stone is cut in France by my trusted lapidary partner, J.P Tromeri.
This guarantees you total transparency and uncompromising quality.
Artisanal craftsmanship
I hand-set every stone myself in my workshop on Île d’Oléron.
The choice of setting depends on how the jewel will be worn and the size of the stone. My aim is to let in maximum light to reveal its brilliance, while guaranteeing a secure and lasting hold.
Absolutely no glue — every stone is securely set by hand.
Tourmaline
Tourmaline
Citrine
Grenat Démantoïde
Spinelle noire
Pierre de soleil
Available gemstones
Select your gemstone for your next bespoke creation from the collection below — all natural, untreated, and cut in France by lapidary J.P Tromeri.
The cuts of the gemstones below are intricate geometric designs, crafted to maximise the play of light from one facet to another."
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