BAUNAT Zurich

BAUNAT runs a showroom at Talstrasse 20, a short walk from Paradeplatz, where advisors work through GIA-certified stones with you and let you try the design in zirconia before the real diamond is set. The brand started in Antwerp in 2008 and sells direct rather than through a chain of shops, so you can pick the stone first and the setting after. Weekdays it's walk-in friendly, weekends are by appointment.