The Science and Art Behind Exceptional Diamonds
The World’s First Patented Diamond
Our diamond patent story began in 1902 when Joseph Asscher created the original Asscher Cut. Since then, every generation of the Asscher family at Royal Asscher has contributed to the growth of our...
Tolstraat 127, Amsterdam
The Asscher Diamond Company chose Tolstraat 127, Amsterdam, to set up its factory with the building's massive windows that let in ample light being the main draw for its selection....
The Excelsior
The fates were aligned the day the Excelsior was discovered, aligned to ensure no one bar a handful of people knew of its existence. On the day Excelsior was found,...
The Cullinan
The 3106-carat Cullinan remains the largest rough diamond of exceedingly rare quality ever discovered. Joseph Asscher collapsed backwards trying to cleave the diamond for the British Crown. And a myth grew...
