DiamAlps

DiamAlps, a brand of Yazam GmbH, deals in certified diamonds and fine jewellery, including engagement rings, and trades stones certified by GIA and HRD. It works by appointment rather than from a shopfront, arranging viewings in Zurich and delivering stones throughout Switzerland. Beyond Zurich it lists offices reaching from Geneva and Basel to Antwerp, Paris, Düsseldorf, Johannesburg and Hong Kong.

The site explains diamond quality through the four Cs and also covers diamonds as an investment, so the focus is squarely on the stone before any setting. Appointments and pages are handled in German, French and English.