Partnership with Gerhard Hahn

For over five years, we have been investing not only in a carefully curated range of gemstones and cultured pearls, but also in the people and producing countries from which these special treasures originate. This work is costly and, above all, time-consuming—and it makes our range what it is today: exceptional, authentic, and virtually unparalleled in the market.
With extensive experience and clear quality standards, we have established loyal business relationships – right back to the countries of origin. However, direct access to mines, farms, and family businesses cannot be taken for granted: the international gemstone market is characterized by exclusivity and often by isolation from independent jewelers and jewelry manufacturersA decisive milestone for us was our encounter with wholesaler Alexandre Hahn, who is the fourth generation to run the Gerhard Hahn company and who has shared our passion for local raw material extraction from the very beginning. Over the years, this shared vision has given rise to a trusting collaboration that has resulted in many of our own projects, as well as several successful joint ventures – in Africa (tourmalines & diamonds), South America (emeralds) and Asia, the global hub of the gemstone trade.Now, in 2025, we are taking the next step:
We are delighted to announce that this close collaboration has now become a business partnership. Gerhard Hahn, one of the most experienced and dedicated suppliers of the finest gemstones for Kobler Zug, has become a partner in our family business, Kobler Goldschmied & Uhrmacher AG, based in Zug, as of this year.

For us, this partnership means:
- New opportunities and direct access where there were previously barriers
- Greater flexibility in product range design
- Exclusive visits to mines and farms – soon also available to interested customers
- Regular market analyses and up-to-date price structures
- Presence at international trade fairs
- And: even higher standards of quality and transparency
An example: When we were looking for access to a particular pearl farm some time ago, but all doors remained closed, it was Alexandre Hahn who opened the way through his personal contacts – without any competitive thinking, but in a joint effort to offer you, the customer, the best possible service.
We would also like to emphasize at this point that this development is not the result of financial necessity – on the contrary. Kobler Zug’s healthy business performance has always enabled us to make investments with foresight. What drives us now is the vision of moving even closer to the source – and taking a further step toward transparency in mining, wholesale, and end customer business.
Kobler Zug remains a family business. With the entry of Gerhard Hahn, 22.5 percent of the share capital is passing into non-family hands, but we see this as a conscious and sustainable course for the future – in the spirit of a generational contract and genuine shared responsibility. Not as investors, but rather as employees in and for our wonderful business.
We are very much looking forward to everything that lies ahead. And we thank you for joining us on this journey.