Are Blue Fluorescent diamonds brighter? Scientists please!

[Garry H (Cut Nut)]

I posted this in the LGD forum in a discussion about boron slightly blueish LGD's

Diamonds with boron that are blue also conduct electricity.
That means there are free floating electrons.
Those electrons are absorbing energy in the yellow part of the spectrum.
Colorless diamonds absorb little or no energy.
Does that mean we should expect less brilliance in blue or blueish diamonds?

By comparison blue fluorescent diamonds have enhanced or additive light energy.
They collect invisible UV energy and add give off some additional blue emission.

I think this may be why I am so attracted to non hazy strong blue fluorescent diamonds in high colors - because they are actually emitting more light in the visible range.
And they have the added benefit of being a cool blue white.

 

[yssie]

The fluorescing material is hotter too! Literally - the transition from higher energy state to lower usually yields both visible light and heat…

@Garry H (Cut Nut). All those times my other half has told me that we need the roof over our heads because diamonds won’t keep us warm. BUT THEY WILL. As long as they’re very very very very fluorescent…

 

[Karl_K]

If your seeing blue from uv exposure the light being returned is more than a non-reactive stone if "all else is equal". Since nothing is ever equal, in the real world I would call it a wash.

Being a conductor is not a function of transparency so a diamond that is tinting the light return blue and it is not from uv reaction is returning less light when the entire spectrum is considered compared to a colorless stone.

I think you like them for the same reason I do, they are kewl!

 

[oncrutchesrightnow]

Can someone E

The fluorescing material is hotter too! Literally - the transition from higher energy state to lower usually yields both visible light and heat…

@Garry H (Cut Nut). All those times my other half has told me that we need the roof over our heads because diamonds won’t keep us warm. BUT THEY WILL. As long as they’re very very very very fluorescent…

Can someone who feels so inclined ELI5 how conservation of energy works in this case with light? Wouldn’t conversion to heat affect light return? Especially if the light returned also increased in frequency? Am not a scientist…

 

[RunningwithScissors]

I would love to see examples in real life of strong blue florescence in colorless diamonds. The idea of them appeals to me greatly since I love icy cool diamonds.

 

[DejaWiz]

Can someone E


1. Can someone who feels so inclined ELI5 how conservation of energy works in this case with light?
2. Wouldn’t conversion to heat affect light return?
3. Especially if the light returned also increased in frequency?

Am not a scientist…

Hopefully I've correctly remembered my physics lessons from a couple decades ago...so, here goes:

1. Photons from fluorescent luminescence are less energetic than the photons of the absorbed light, which accounts for some of the remaining total energy absorbed being converted to/released as heat, but this would be a very low amount.

2. No, since the miniscule amount of heat does not impact the way a diamond interacts with the source lighting.

3. Hopefully I'm understanding your question correctly and this answer is what you're looking for: There is a limit to the amount of absorption that can take place depending on the potential/maximum level of fluorescence (faint, low, medium, strong, very strong) for a given diamond. Increasing the magnitude/strength of the source light isn't necessarily going to create more fluorescent luminescence and heat, because the potential/maximum level of fluorescence is the limiting factor (this is assuming adequate exposure time for maximum absorption has been attained).

 

[Garry H (Cut Nut)]

Thanks DW,
Crutches two simple examples are fluorescent tube lights and LED's.
Both accept energy from electricity and excite electrons giving off light and heat.
LED's are around 5 to 40% efficient at producing light from electricity - so that means that 60 to 95% of the electricity is turned into heat.
I don't think your fluorescent diamond are going to be that hot.
But in this case just using the color eye dropper on the same spot in Microsoft Paint on these two images shows a small but consistently measurable increase in luminescence being produced by the addition blue in the right side image when the diamond was photographed in daylight. The top number is on a 'white' part and the bottom is on the dark star.

 

[oncrutchesrightnow]

Hopefully I've correctly remembered my physics lessons from a couple decades ago...so, here goes:

1. Photons from fluorescent luminescence are less energetic than the photons of the absorbed light, which accounts for some of the remaining total energy absorbed being converted to/released as heat, but this would be a very low amount.

2. No, since the miniscule amount of heat does not impact the way a diamond interacts with the source lighting.

3. Hopefully I'm understanding your question correctly and this answer is what you're looking for: There is a limit to the amount of absorption that can take place depending on the potential/maximum level of fluorescence (faint, low, medium, strong, very strong) for a given diamond. Increasing the magnitude/strength of the source light isn't necessarily going to create more fluorescent luminescence and heat, because the potential/maximum level of fluorescence is the limiting factor (this is assuming adequate exposure time for maximum absorption has been attained).

#1 is exactly the answer I was looking for. Thanks.

 

[oncrutchesrightnow]

Thanks DW,
Crutches two simple examples are fluorescent tube lights and LED's.
Both accept energy from electricity and excite electrons giving off light and heat.
LED's are around 5 to 40% efficient at producing light from electricity - so that means that 60 to 95% of the electricity is turned into heat.
I don't think your fluorescent diamond are going to be that hot.
But in this case just using the color eye dropper on the same spot in Microsoft Paint on these two images shows a small but consistently measurable increase in luminescence being produced by the addition blue in the right side image when the diamond was photographed in daylight. The top number is on a 'white' part and the bottom is on the dark star.

Thanks. High five on the love of SBF.