Frank Darling

Frank Darling runs a try-at-home service so you can compare settings before deciding, and pairs it with a custom design process. Stone choice goes beyond plain diamonds to lab-grown, moissanite, fancy colour and champagne diamonds, and recycled diamonds. You can book either an in-person consultation to view settings and a selection of diamonds, or a virtual session with a designer.

Shipping and returns are free, and the ring comes with a lifetime warranty plus 90-day free resizing. The showrooms and phone support are US-based, so a buyer shipping to Switzerland should confirm international delivery and timing before ordering.