Need assistance to distinguish the type of this gemstone

[georgejone414]

Dear Friends,
I hope this message finds you well and that both your personal and professional endeavors are thriving.

Could you kindly confirm whether this gemstone is a Chrysoberyl? Additionally, I would appreciate it if you could provide the cost. The gemstone weighs 218 carats and the dimension is 15.6x37.2x93.5 mm. Please check the pictures of it in PDF format file.

Looking forward to your response.

Best regards,
George

 

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[Red-Coat]

Welcome to Tnet, George.

I think you're going to find most members are reluctant to open unsolicited pdf files... especially on a new member's first post. No offence intended, but the pdf format is increasingly being used to hide malware and other malicious codes which can evade anti-virus protection.

I would suggest you post your pictures openly as good sharp conventional image files if want opinions.

As an aid to identification, folks also want a location and any other information you can provide... especially hardness.

 

[georgejone414]

Welcome to Tnet, George.

I think you're going to find most members are reluctant to open unsolicited pdf files... especially on a new member's first post. No offence intended, but the pdf format is increasingly being used to hide malware and other malicious codes which can evade anti-virus protection.

I would suggest you post your pictures openly as good sharp conventional image files if want opinions.

As an aid to identification, folks also want a location and any other information you can provide... especially hardness.

I replaced the PDF file by pictures.

 

[Red-Coat]

Thanks for the pictures. I'm not seeing chrysoberyl. It looks more like a garnet, or possibly a spinel. They have similar hardness, with garnet being a little softer. A garnet will not fluoresce under UV light (occasionally very weakly so) but a spinel will have strong fluorescence.

Big price difference between the two. A rough garnet that size might have a value of up to a few tens of dollars, but a spinel considerably more. It all depends on the quality of the stone and suitability for cutting, but I can see multiple flaws in this one.

You didn't say where you found it, or provide any other information.

 

[georgejone414]

Thanks for the pictures. I'm not seeing chrysoberyl. It looks more like a garnet, or possibly a spinel. They have similar hardness, with garnet being a little softer. A garnet will not fluoresce under UV light (occasionally very weakly so) but a spinel will have strong fluorescence.

Big price difference between the two. A rough garnet that size might have a value of up to a few tens of dollars, but a spinel considerably more. It all depends on the quality of the stone and suitability for cutting, but I can see multiple flaws in this one.

You didn't say where you found it, or provide any other information.

Thank you for the valuable information.

 

[georgejone414]

Thanks for the pictures. I'm not seeing chrysoberyl. It looks more like a garnet, or possibly a spinel. They have similar hardness, with garnet being a little softer. A garnet will not fluoresce under UV light (occasionally very weakly so) but a spinel will have strong fluorescence.

Big price difference between the two. A rough garnet that size might have a value of up to a few tens of dollars, but a spinel considerably more. It all depends on the quality of the stone and suitability for cutting, but I can see multiple flaws in this one.

You didn't say where you found it, or provide any other information.

I have the gemological test report for it, it's issued in Dubai. If you need to see it, I can share it with you

 

[Red-Coat]

I have the gemological test report for it, it's issued in Dubai. If you need to see it, I can share it with you

No I don't wish to see it thanks... but if you have a gemological report (from a reputable authority) that says it's chrysoberyl, then why are you asking here... when all we have to go on are your pictures?

 

[georgejone414]

No I don't wish to see it thanks... but if you have a gemological report (from a reputable authority) that says it's chrysoberyl, then why are you asking here... when all we have to go on are your pictures?

Yes, I asked that question because there's something happened to this gemstone. Before around 7 years from now, the shape, the figure and the color of it was something different, it was like normal stone I'm attaching its picture showing how was this stone before 7 years. Now it becomes red after cleaning it for many years. Please write your comments

 

[Red-Coat]

Yes, I asked that question because there's something happened to this gemstone. Before around 7 years from now, the shape, the figure and the color of it was something different, it was like normal stone I'm attaching its picture showing how was this stone before 7 years. Now it becomes red after cleaning it for many years. Please write your comments

Why did you not give us all the information from the beginning? And you still haven;t given us a coherent story. You're just making the question more difficult and creating confusion.

Gemstones don't change shape, unless your cleaning process has removed an uneven layer of weathering... and gemstones generally do not exhibit that kind of weathering.

I think the appropriate questions now would be:

- Is the gemological report you have real or fake?
- What credentials or reputation does the testing laboratory have?
- Did you pay for the test report on a stone you personally found, or did it come with the stone when you acquired it (and how)?
- Is the red stone you're showing actually the same one that was tested (and was the report from examination of the grey stone seven years ago, or from recent testing of the cleaned red red stone?)

 

[georgejone414]

Why did you not give us all the information from the beginning? And you still haven;t given us a coherent story. You're just making the question more difficult and creating confusion.

Gemstones don't change shape, unless your cleaning process has removed an uneven layer of weathering... and gemstones generally do not exhibit that kind of weathering.

I think the appropriate questions now would be:

- Is the gemological report you have real or fake? Yes, it's real
- What credentials or reputation does the testing laboratory have? It was tested in Dubai Municipality on 1 October 2024.
- Did you pay for the test report on a stone you personally found, or did it come with the stone when you acquired it (and how)? yes I paid the cost of the report.
- Is the red stone you're showing actually the same one that was tested (and was the report from examination of the grey stone seven years ago, or from recent testing of the cleaned red red stone?) Yes, the red stone is the same one that was tested. Unfortunately, I didn't examine the stone when it was grey stone.

Please check the answers of your questions above in bold, black color