Rose de France
Gemporia's customer
In July 2022 Krzysztof Stankiewicz (GIA-trained gemologist from Cracow, Poland) recorded a short video about Gemporia. In this video ("Pathology on the Jewellery Market") he speaks about his experiences with Gemporia's products, certificates, and descriptions.
These are Mr Stankiewicz's conclusions:
1) When it comes to identifications and enhancements, Gemporia rather doesn't make mistakes. Most of their certificates are good. But it's not always the case. There were incidents of selling synthetic colourless cubic zirconias (!) as natural colourless zircons.
2) Gemporia offers black diamonds and marks them as irradiated. But nowadays most of the black diamonds on the market are treated with LPHT (low-pressure & high-temperature) method. Gemporia should make sure what was really done to these jewels. If there are any inaccuracies/omissions in the descriptions, the proper corrections are necessary.
3) Regarding the carat weight of the stones, Gemporia sometimes gives conflicting information. Unfortunately, contradictions in one report make the whole thing invalid.
4) So-called "Songea rubies" offered by Gemporia look strange. They're more similar to reddish orange sapphires (treated with beryllium diffusion) than to actual rubies. Of course, it's not only Gemporia's problem. The line between corundum varieties is blurry. Depending on the laboratory or company, the same specimen can be marked as red sapphire or red ruby. It's possible to buy stones as sapphires (cheaper type of corundum) and then sell them as rubies (significantly more expensive variety). Such practices are fraudulent. The jewellery market worldwide needs regulations to stop this pathology.
Krzysztof Stankiewicz's video (in Polish):
These are Mr Stankiewicz's conclusions:
1) When it comes to identifications and enhancements, Gemporia rather doesn't make mistakes. Most of their certificates are good. But it's not always the case. There were incidents of selling synthetic colourless cubic zirconias (!) as natural colourless zircons.
2) Gemporia offers black diamonds and marks them as irradiated. But nowadays most of the black diamonds on the market are treated with LPHT (low-pressure & high-temperature) method. Gemporia should make sure what was really done to these jewels. If there are any inaccuracies/omissions in the descriptions, the proper corrections are necessary.
3) Regarding the carat weight of the stones, Gemporia sometimes gives conflicting information. Unfortunately, contradictions in one report make the whole thing invalid.
4) So-called "Songea rubies" offered by Gemporia look strange. They're more similar to reddish orange sapphires (treated with beryllium diffusion) than to actual rubies. Of course, it's not only Gemporia's problem. The line between corundum varieties is blurry. Depending on the laboratory or company, the same specimen can be marked as red sapphire or red ruby. It's possible to buy stones as sapphires (cheaper type of corundum) and then sell them as rubies (significantly more expensive variety). Such practices are fraudulent. The jewellery market worldwide needs regulations to stop this pathology.
Krzysztof Stankiewicz's video (in Polish):