• 1
  • 2
  • 3
Come to where the knowledge is! Deutsche Gemmologische Gesellschaft eV (German Gemmological Association)

We are pleased to inform you that the DGemG-information, which we’ve been publishing quarterly in German since the beginning of 2016, is now gradually being available in English as well.

 

Januar Posting Newsletter english borax klein

In the picture above you see a fissure in a ruby (transmitted light, x40, FOV approx. 4 mm), which has been healed artificially during the thermal enhancement. In addition to the colour improvement, this method also improves significantly the transparency of the material.
The DGemG-information “Corundum with artificially healed fissures” presents the treatment process, the identification as well as the nomenclature required for this enhancement.

 

Content

1. Introduction

2. Chemical additives and treatment process

3. Identification

4. Filling of fractures and cavities

5. Nomenclature

6. Literature

 

The entire article is available here:

DGemG-information: Corundum with artificially healed fissures

 

 

We are pleased to inform you that the DGemG-information, which we’ve been publishing quarterly in German since the beginning of 2016, is now gradually being available in English as well.

In the picture you see a fissure in a ruby (transmitted light, x40, FOV approx. 4 mm), which has been healed artificially during the thermal enhancement. In addition to the colour improvement, this method also improves significantly the transparency of the material.
The DGemG-information “Corundum with artificially healed fissures” presents the treatment process, the identification as well as the nomenclature required for this enhancement.

The entire article is available here:

DGemG News

DGemG-Information: Raritäten bei...

Neben den klassischen perlenbildenden Meeresmuscheln Pinctada imbricata, Pinctada fucata, Pinctada margaritifera, Pinctada...
Mehr lesen...

26.10.-28.10.2018 Gemworld München

Die Gemworld München 2018 findet vom 26. bis 28. Oktober in der Messe München statt. Die DGemG e.V. und die DSEF werden mit...
Mehr lesen...

28.09.-01.10.2018 Intergem

Die Intergem 2018 findet vom 28.09. bis 01.10. in der Messe Idar-Oberstein statt. Die DGemG e.V. und die DSEF werden mit einem...
Mehr lesen...

29.09.2018 2. Arbeitstagung 2018

2. Arbeitstagung 2018 Samstag, 29. September 2018 DGemG-Ausbildungszentrum in Idar-Oberstein (Deutsches Gemmologisches...
Mehr lesen...

2. Arbeitstagung 2018

2. Arbeitstagung 2018 Samstag, 29. September 2018 DGemG-Ausbildungszentrum in Idar-Oberstein (Deutsches Gemmologisches...
Mehr lesen...

1. DGemG-Arbeitstagung 2018

Die künstliche Eigenschaftsveränderung von Korunden stand im Mittepunkt der 1. Arbeitstagung 2018 der Deutschen Gemmologischen...
Mehr lesen...