Gübelin

Gübelin is unusual among Zurich jewellers because its reputation rests at least as much on gemmology as on retail. The house’s gem lab grades stones for buyers worldwide, and that expertise shapes what ends up in the Bahnhofstrasse boutique cases. Coloured stones, particularly rubies, sapphires, and emeralds, run through much of the Gübelin collection rather than sitting at the margins of a diamond-first range.

For an engagement ring, the bespoke service lets you work through stone options with the house’s gemmologists and designers before choosing a setting. The team can explain stone origin and treatment history in more detail than most retailers, which is useful when buying a ruby or padparadscha sapphire where origin significantly affects value.