New Machine Jewelers are Using??

[elle_chris]

Can someone please explain why CVD is showing up red on his machine, and natural blue? He says "maybe it's gas?".. Can an expert elaborate?

 

[Bron357]

Ok, worked it out. It’s detecting the nitrogen that is prevalent in lab diamonds ie Type 2a diamonds.
The machine uses some type of UV light wave to detect the presence of nitrogen. It shows up as red. Natural diamonds will be blue. It can also detect diamonds that have been “colour enhanced”.
Interestingly It can’t test accurately above G Colour and they do advise that there are natural diamonds that are Type 2a and they will also show some red. These they suggest be sent to a reputable lab for confirmation.
There seems to be a few of them available at different price points. The one in the video is around $7,000. There are other brands that are cheaper.

 

[elle_chris]

Ok, worked it out. It’s detecting the nitrogen that is prevalent in lab diamonds ie Type 2a diamonds.
The machine uses some type of UV light wave to detect the presence of nitrogen. It shows up as red. Natural diamonds will be blue. It can also detect diamonds that have been “colour enhanced”.
Interestingly It can’t test accurately above G Colour and they do advise that there are natural diamonds that are Type 2a and they will also show some red. These they suggest be sent to a reputable lab for confirmation.
There seems to be a few of them available at different price points. The one in the video is around $7,000. There are other brands that are cheaper.

Interesting.
They are are trying to come with ways to differentiate between lab and natural. At least for the common jeweler.

Thanks for looking into it!

 

[DejaWiz]

Ok, worked it out. It’s detecting the nitrogen that is prevalent in lab diamonds ie Type 2a diamonds.
The machine uses some type of UV light wave to detect the presence of nitrogen. It shows up as red. Natural diamonds will be blue. It can also detect diamonds that have been “colour enhanced”.
Interestingly It can’t test accurately above G Colour and they do advise that there are natural diamonds that are Type 2a and they will also show some red. These they suggest be sent to a reputable lab for confirmation.
There seems to be a few of them available at different price points. The one in the video is around $7,000. There are other brands that are cheaper.

There is no nitrogen in Type IIa diamonds...they are the purest diamonds with the least amount of trace elements. Ia and Ib diamonds contain nitrogen.

 

[Diamond Girl 21]

Ok, worked it out. It’s detecting the nitrogen that is prevalent in lab diamonds ie Type 2a diamonds.
The machine uses some type of UV light wave to detect the presence of nitrogen. It shows up as red. Natural diamonds will be blue. It can also detect diamonds that have been “colour enhanced”.
Interestingly It can’t test accurately above G Colour and they do advise that there are natural diamonds that are Type 2a and they will also show some red. These they suggest be sent to a reputable lab for confirmation.
There seems to be a few of them available at different price points. The one in the video is around $7,000. There are other brands that are cheaper.

I thought type 11a diamonds are devoid of nitrogen. I am so confused....and I'm currently waiting for a lab diamond....sigh

 

[DejaWiz]

I thought type IIa diamonds are devoid of nitrogen.

Correct...IIa have no nitrogen.

 

[Karl_K]

Testing for the lack of nitrogen can tell you its IIa but it can not tell you if its a natural IIa or a lab IIa.

 

[Karl_K]

better video on the machine:

Homepage for the machine: https://www.yehuda.com/

 

[Diamond Girl 21]

Correct...IIa have no nitrogen.

Thanks @DejaWiz! I originally missed your other post.

 

[Karl_K]

@DejaWiz geek out: https://us02web.zoom.us/rec/play/cB...7262b4c54e479397524a19262223&_x_zm_rhtaid=776

 

[DejaWiz]

@DejaWiz geek out: https://us02web.zoom.us/rec/play/cB...7262b4c54e479397524a19262223&_x_zm_rhtaid=776

Interesting! So it's a device that shows the color of fluorescence and phosphorescence, which LGDs emit as red whereas EGDs emit as blue (with rare exceptions).

 

[elle_chris]

Thanks for the videos @Karl_K .

So it's all about the long UV fluoro.. interesting!