Diamondere

Diamondere describes itself as a seventh-generation family jeweller and handcrafts each piece to order. You can start with a natural diamond, a lab diamond or a setting, then build around it, and the range of stones is wide, taking in sapphire, ruby, emerald and many semi-precious gems alongside diamonds. Natural diamonds are GIA certified, lab diamonds are IGI certified, and stones are described as conflict-free.

Shipping is free worldwide, which puts a Swiss order on the same footing as a domestic one. Returns and resizing run 100 days, and every ring comes with a free lifetime warranty. Certification and engraving are included.