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Buying a piece of jewelry is an important moment. The Gemmyo Maison has a duty: to help you to find the jewel of your dreams. We are here to answer all your questions.

We are available Monday to Friday, 9 am to 7 pm.


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Our team is available by phone.

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From Switzerland +41 22 518 08 94



Send us an e-mail

For all inquiries, please contact us at hello@gemmyo.com.



Any questions? Have a look at our Q&A.
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Umba sapphire interlude Logo Umba blanc

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  • Ambiance visual Umba
  • Ambiance visual Umba - Rings with sapphire Umba
  • Ambiance visual Umba - Rings with sapphire Umba
  • Ambiance visual Umba

    The origin story

    From the peaks of the mountains to the heart of Tanzania's Tsavo Valley, the flamboyant Umba sapphire makes an entrance at Gemmyo.

    Named after the river in which it was discovered, Umba, this gem has been naturally polished by water for thousands of years and has virtually never been revealed to the general public.

    What makes it so special? Beyond its extreme rarity, Umba sapphire offers a palette of colors and brilliance that are simply extraordinary for an unheated crystal.

  • Ambiance visual Umba - Rings with sapphire Umba

    A crystal of unique rarity

    Umba sapphire is such a rare stone that its export has been drastically curtailed, if not banned... and even the most experienced specialists are unable to unearth these much sought-after rough crystals.

    After months and months of work, our ambition has become a reality. For the first time in fine jewelry, Gemmyo is bringing to light this rare gem, usually reserved for the most exceptional jewelry sets. What a source of pride!

  • Ambiance visual Umba - Rings with sapphire Umba

    A bold move

    With this limited edition, Gemmyo was making a unique gamble: highlighting a gemstone, not just a color.

    For the first time in the Maison's history, it was not possible to order online. The brilliance of this sapphire could only be admired in-store.

Ambiance visual Umba

A rainbow of colours

From the soft light of dawn to the blazing sunset, Umba sapphire is one of the only stones with such naturally pronounced hues, without any treatment or heating.

From its vast range of colors, Gemmyo has selected the 7 most delicious shades: purple, carmine, peach, cognac, daffodil, chartreuse, meadow green... so many colors, so many nuances and so many emotions.

This stone is no longer available today. If you are interested, we invite you to join our waiting list.

suscribe to the waiting list
The image shows a purple colored Umba sapphire The image shows a carmine colored Umba sapphire The image shows a peach colored Umba sapphire The image shows a cognac colored Umba sapphire The image shows a daffodil colored Umba sapphire The image shows a chartreuse colored Umba sapphire The image shows a meadow green colored Umba sapphire

cognac

A very limited edition

This stone is no longer available today.

If you are interested, we invite you to join our waiting list.

This way, you will be the first to be informed when we manage to find more.

suscribe to the waiting list
The image shows a cognac-colored Umba sapphire on a transparent background.
"The Umba sapphire has the beauty and brilliance of a sunset. Compared to other stones, all colors are represented with intensity. Everything is incandescent." Alexis Coin - Gemmologist
Ambient visual of the Umba event

A look back at the Umba event

Go back to the launch event for the Umba limited edition. Destination Tanzania!

Two days aboard a barge in the heart of Paris to discover the Umba sapphire and its marvelous shades. A timeless moment to live in pictures.

Experience Umba
Gemmyo comes to Zürich

Gemmyo comes to Zürich

Visit us at La Résidence in Zurich to try our unique creations.

Book your appointment now!

The Christmas edition jewelry box

The Christmas edition jewelry box

From November 15th to 26th, a jewelry box will be included with all orders over CHF 500*.

Don't wait, stock is limited.