THE LODE VAN BERQUEM CONTROVERSIES | EN

"If the polemic is not over, it maybe admitted that the name of Louis De Berquem is associated to the diamond cutting technique. "
Any and all Antwerp inhabitant or visitor to this Belgian city has already seen the bas-relief decorating the corner of Jezusstraat and Leysstraat. There are few of them, however, who know the controversies about the discovery of the diamond cut.

Lode Van Berquem - Louis de Berquem - is the object of controversies. Some doubt whether he actually existed, others claim that he was happy enough just disclosing the secrets jealously kept of a corporation. Whatever the case, the reading of many old works or historical works on precious stones are intriguing because this Bruges man is always there whenever it comes to the discovery of diamond cutting. It is established, whatever the case may be, that the technique of cutting on an iron disk coated with diamond powder goes back to the 15th century And there is every reason to believe that the legendary character, Lode Van Berquem, also remains an actual fact: research in the Bruges city registers often returned the surname, although they never actually revealed any activity connected to diamonds; on the other hand, there is no single trace of diamond cutting prior to the birth of the Belgian when there are talks of the stone before his birth, it is always at the supposed rough stage. Never indeed, are the fires of diamonds, a typical consequence of its cut, mentioned in the old writings. So Charles the Great's cape was decorated with four rough diamonds. And also, in the inventory of the Dukes of Burgundy in 1432, it is indicated. "a gold necklace, with loose leaves, decorated with twelve points of naive diamonds." Still used today by the diamond dealers, the term "naive" refers to a natural stone or the rough part of a cut diamond Already more than one century ago, Henri Jacobs used to state that never did the elders talk about the fires of the diamonds which, however; may not be compared to any other gem owing to its qualities and its capacities to present, with such a level of intensity such phenomena as sheen, brilliance, reflection, refraction and dispersion There is a simple reason to it. the elders did not know how to cut it."

20200914_940x400.jpg
14/09/20
Evolution et révolution du secteur diamantaire | FR

Les diamants sont connus depuis des millénaires, mais selon les sources historiques, la taille commence…

20200830_Malachite-_940x400.jpg
30/08/20
Jules Cornet, géologue de génie et passionné | FR

Il jeta les bases de toute la géologie du Congo. Il fut adjoint à l'expédition…

20200511_Emerald_940x400.jpg
11/05/20
Synthetische smaragden: flux- en hydrothermaal procedé | NL

Flux smaragd. De kleur van smaragd intrigeert de mens al eeuwen. Het feit dat ze…

20200505_Erwin_940x400.jpg
05/05/20
Hydrothermaal smaragd | NL

Doordat de reactie bij een hydrothermaal proces zich voltrekt in een hermetisch gesloten autoclaaf, lijkt…

20200424_Zirconium_v2.jpg
21/04/20
LE ZIRCONIUM CUBIQUE, MEILLEUR SUCCÉDANÉ DU DIAMANT | FR

Tout le monde en parle dans les milieux professionnels ainsi que dans le public, mais…

20200220_940x400.jpg
20/02/20
Une variante dans la technique de taille des pierres précieuses | FR

Depuis la découverte de la taille des pierres précieuses, l'évolution technique a été stagnante. La…

20200129_DresdenGreenReplica_940x400.jpg
29/01/20
The Dresden Green | EN

This pure diamond probably originating from India, has an exceptional apple-green colour. It has the…

20200106_940x400.jpg
08/01/20
“Lab Grown, Created, Man Made” en “Cultured” Robijnen en Saffieren | NL

Er werd de laatste jaren veel geschreven en gesproken over synthetische diamant, met ronkende benamingen…

20191022_Couronne_940x400.jpg
22/10/19
PRINCE NOIR, HISTOIRE D’UN RUBIS QUI N’EN ÉTAIT PAS | FR

Le grand négociant et collectionneur de pierres fabuleuses, Jean-Baptiste Tavernier déclare avoir vu deux «…