Alexander Diamant died at age 72 in Camp Westerbork on 6 January 1943. He was buried at the Jewish cemetery in Assen on 8 January 1943.
Jewish Historical Museum, Documents collection, inv.nr 3397; Death register of the Jewish community Assen
The funeral records at the Jewish cemetery in Assen reveal that Alexander Diamant was buried there.
In addition, a Jokos file (number 55640) on this person is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.
This person is commemorated on a memorial in Assen. More information on this memorial can be found (in Dutch) on the website of the Nationaal Comité 4 en 5 mei.