Otto Hahn begins trading in gemstones in Paris to Cartier, Van Cleef & Arpels, etc.; becoming a pre-eminent dealer of his day.

2nd generation of Hahn, Gerhard Hahn and his wife established Gerhard Hahn for the gemstone trade in Hamburg, Germany.

Gerhard Hahn established roots and head quarters in Düsseldorf, Germany.

Record breaking 32+ ct Burmese Ruby sold by Gerhard & his son, Michael Hahn, a stone like this is still internationally unmatched in terms of size and quality to this day.

3rd generation, Michael Hahn, is the pioneer of Australien South-Sea- and Tahiti- cultured pearl importation to Europe; internationally distinguishing himself for fine quality, large size pearls.

4th generation of Hahns, Alexandre, Lawrence and Philip, collectively hold credentials in gemology (DGemG, GG), goldsmith artisanship, BFA and BA in photography and business management, plus other accomplishments to lead the Hahn company to its next level.

Catherine Sauvage Haute Joaillerie GmbH - is established by Catherine Sauvage-Hahn offering High Jewellery designs in a retail boutique setting in the coveted Konigsallee, Düsseldorf, Germany.

Landmark sale, Kashmir the 7.2 ct VCA signed, Kashmir Sapphire ring sold unseen to a private collector because he trusted the Hahn expertise. 

Landmark piece, The Perfection, a record breaking South Sea cultured pearl strand for its size and quality; 23 unblemished, perfect Australian South-Sea pearls 18 by 21+ mm necklace sold to a Hong Kong jeweler.

Landmark piece, Padparadscha Sun; spectacular record breaking 70+ ct Padparadscha Sapphire created into a ring is sold.

Landmark piece, The Tahitian; sourced and sold one of the largest round (to date) Tahitian cultured pearls 20+ mm. 

Hahn Limited, located in Hong Kong as an independent wholesaler expanded trade in Asia. 

Hahn Limited expands its services from wholesale to bespoke jewellery in Hong Kong, specializing in engagement rings and other bespoke jewellery.

Landmark piece, The Perfect Pair named for a pair of rare Pigeon's Blood Burmese rubies sold to the USA weighing 6.03 and 6.03 ct.