Gemmyo

Gemmyo makes its rings in its French ateliers and customises across metals and stones, with coloured options such as blue-grey and green sapphires, aquamarine and emerald sitting next to diamonds. The house was founded in 2011. For Swiss buyers it is worth noting that Gemmyo has boutiques in Geneva and Zurich, and video appointments can be booked online.

Delivery is free throughout Switzerland. Rings can be returned or exchanged within 30 days of receipt, including engraved pieces if they are unworn, and free resizing is offered. Manufacturing defects are covered in full, including return shipping, though the warranty does not apply to work done outside their own workshop.