The period between circa 1900 and the WW1, also known as the Belle Epoque, Fin de Siècle or ‘the beautiful era’ becomes a time that Bonebakker flourishes. In this period of great wealth, there is plenty of scope for science and art. The trend in art becomes very ornate and voluptuous, a style that can be seen in both architecture and jewellery.
Bonebakker adopts this fashionable trend by creating high quality, elegant jewellery. In the style of the Belle Epoque the jeweller adds different gems to his collection of gold, silver and diamonds. Jewellery made of gold and platinum are decorated with sapphires and emeralds. But Bonebakker also creates necklaces made from rare pearls. At jewellery exhibitions where silversmiths show off their abilities, the firm always wins gold, silver and honourable medals.
In this period the board of the Bonebakker company sees a lot of changes. Johan Christiaan Reinier, who dies in 1883, is succeeded by his son Willem Gerard. Willem Christiaan leaves the company in 1890 and is succeeded by his brother Carl. From 1891 Bonebakker is run by the two cousins who incorporate the adjacent building into the company.
In 1911 Carl Bonebakker quotes: ‘Our new building must keep a dignified distinction, shown in the exterior as well as the interior decoration. This will be best achieved by keeping everything in the Empire style. We must also maintain the air of a closed shop, however with clear signs of ongoing trade.’