For almost 140 years, Bonas has been instrumental in helping clients understand and manage change in the diamond industry.

The Bonas family has been at the forefront of the diamond industry since the 1870's when Henry Bonas became one of the original founding families of the London Syndicate, which marketed the original output of De Beers Consolidated Mines. A member of the Bonas family has been at the helm of this renowned diamond broking firm ever since. Today, no other broking house can match our history, built up through five generations of success in advising clients, and we believe none can call on the same level of knowledge and expertise.

Bonas has a reputation for innovation and adaptation - in the 1950's we were one of the first firms to recognise the emergence of India as an important new diamond player and we were influential in organising the shift towards alternative production centres in the 1980's.

We continue to be acknowledged as a leading source of knowlegde and experience in the diamond industry, whether through our understanding of the increasingly important role of southern Africa and Dubai, or by striving to maintain integrity in our product through our leadership in the Responsible Jewellery Council (RJC).



Bonas Special Tenders


Braúna mine

Antwerp viewings:

- 5 - 18 November 2019 (19 Nov 1pm CET)


Antwerp viewings:

Lucapa Diamond Company: Mothae

Antwerp viewings:

- 30 September - 4 October 2019 (7 October 3pm CET)

- 9 - 13 December 2019 (13 December 3pm CET)

Lucara Diamond Corp : Karowe mine

Botswana viewings only:

- 2 - 12 December 2019 (12 Dec 4pm CET)

Mountain Province: Gahcho Kué mine

Antwerp viewings:

- 16 - 26 September 2019 (27 Sep 3pm CET)

- 4 - 15 November 2019 (15 Nov 3pm CET)

- 2 - 12 December 2019 (13 Dec 3pm CET)

Namakwa Diamonds: Kao mine

Antwerp viewings:

- 17 - 27 September 2019 (30 Sept 3pm CET)

- 25 November - 5 December 2019 (6 Dec 3pm CET)

Stornoway Diamonds: Renard mine

Antwerp viewings:

- 3 - 16 October 2019 (17 Oct 3pm CET)

- 18 - 28 November 2019 (29 Nov 3pm CET)

    * Subject to change


If you wish to schedule an appointment, please contact our Antwerp office at:
+32 (0)3 233 70 80
diamondbrokers bonasgroup com


To consult our Privacy Statement, please click on the below Terms of Use.