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'A altas horas' means 'The small hours' in Spanish.

The middle of the night, where foolishness meets creativity.

Aaltas is a passionate project, free, without constraints, with its distinctive sculpted forms and flamboyant colors. It is also an original assembly of noble and high-end technological materials.

The lightness of aluminum is combined with the majesty of 18-carat gold and precious stones to create timeless and contemporary pieces.

Bold and graphic, the jewels respond to an uncompromising quality, a wise condensation of artisanal and technological knowledge, each jewel has been designed to last and produced in small series.

The first collection, Mambo, strikes for the volumes that are both elementary and exuberant. The play of reflections makes the light dance and the colors vibrate so that refinement ends up flirting with playfulness and whispers a delicious melody in your ear.




Sonia is a professional watch and jewelry designer for the most major brands since 2001.

She is fortunate to be surrounded by the best European craftsmen and their know-how allows her to explore new paths and to constantly improve her pieces.

After having developed several jewelry brands, designed many watches, and run her own jewelry store in Geneva, AALTAS is undoubtedly her most personal and committed project.

Born in complete freedom, AALTAS is an invitation to explore uncharted territories.





Webdesign: Stéphanie Brusick

Photography: Anouk Schneider & AlmaKarina

Model: Nine