Blue Nuance HPHT & Boron Test

[Garry H (Cut Nut)]

As I mentioned on a couple of posts,
Apparently a lot of HPHT LGD on the market have a pale blue tint - IGI and maybe more labs even note it on certs.
I asked a friend John Chapman, (Gemtrix.com.au natural diamond testing equipment) if they could they be semi conductors?
"Yes, the color is from Boron so in theory they would be semi conductors."
I would love anyone who has one of these diamonds to please test them for electrical conductivity / resistance please.

Having lunch with John tomorrow (along with the geologist who found the most diamonds ever).

 

[DejaWiz]

Outstanding info...looking forward to reading more after your luncheon with John.

As an aside, I did take my digital multimeter to my wife's LGD a while back and it has zero conductivity/resistance.

 

[Garry H (Cut Nut)]

Outstanding info...looking forward to reading more after your luncheon with John.

As an aside, I did take my digital multimeter to my wife's LGD a while back and it has zero conductivity/resistance.

It may require a more sensitive device.
Rockdiamond David is going to have a crack at it.

 

[MelloYello8]

Omg it does conduct. Just tested it with my kid’s STEAM toy. The diamond completes the circuit on her music circuit kit.

 

[MelloYello8]

Omg it does conduct. Just tested it with my kid’s STEAM toy. The diamond completes the circuit on her music circuit kit.

I took a video but I guess I can’t load it here. Here are screenshots of the negative control (paper) that made no sound, positive control (directly on metal contact) that made a sound, and on the diamond, careful not to touch the gold/palladium setting, which made the same sound as the positive control.

 

[Garry H (Cut Nut)]

I took a video but I guess I can’t load it here. Here are screenshots of the negative control (paper) that made no sound, positive control (directly on metal contact) that made a sound, and on the diamond, careful not to touch the gold/palladium setting, which made the same sound as the positive control.

You can load to YouTube etc and then post a link.
A great simple workaround you came up with

 

[Karl_K]

kewl! that would make it a conductor not a semiconductor at that level of boron.

 

[MelloYello8]

kewl! that would make it a conductor not a semiconductor at that level of boron.

I think it’s a semiconductor anyway because diamond structure would be an insulator that is conducting a current due to the bits of boron, lacking a valence electron, creating holes in the lattice that can accept an electron (p-type). Curious as to what could be used as an n-type semiconductor to couple with the boron-diamond in a diode or transistor, I found that phosphorus has been used. I wonder what a phosphorus doped diamond would look like and if it’s ever been cut as a gem.

 

[Karl_K]

I think it’s a semiconductor anyway because diamond structure would be an insulator that is conducting a current due to the bits of boron, lacking a valence electron, creating holes in the lattice that can accept an electron (p-type). Curious as to what could be used as an n-type semiconductor to couple with the boron-diamond in a diode or transistor, I found that phosphorus has been used. I wonder what a phosphorus doped diamond would look like and if it’s ever been cut as a gem.

To low a resistance to technically be classified as a semiconductor at that doping level.

 

[Garry H (Cut Nut)]

Anyone else trying?