slg47
Ideal_Rock
- Joined
- Apr 4, 2010
- Messages
- 9,667
Hi everyone...I am not trying to rehash the "does blue fluor make my J/K look whiter" discussion but could not think of a more appropriate title.
In the GIA study it is stated that blue fluorescence in diamonds is due to a group of three nitrogen atoms (is this 3 nitrogens and a hole, instead of 4 tetrahedral carbons? or just 3 nitrogens...in some other arrangement?)
http://lgdl.gia.edu/pdfs/W97_fluoresce.pdf
but...I thought that diamond color, or yellowness, was also caused by the presence of nitrogen. so my question is...is a D with SBF really a D? I realize color is on a scale and the amounts of impurities are minute. I guess what I am asking is, is it possible to have enough nitrogen to cause SBF without causing perceptible difference in color (i.e. a D with SBF), or is something else responsible for either the fluor, color, or both?
apologies if this is not the correct forum but as a chemist (and nerd) I am interested in these things and this did not seem quite right for Rocky Talky. also if anyone has an article to link that would be great too.
ETA I just found this
Nitrogen can also occur in various ‘states’ with different electronic properties within a diamond so that it is possible for one D coloured non-fluorescent diamond to have 10 times more nitrogen than another that is K colour and fluorescent.
but am interested in what these different 'states' are?
In the GIA study it is stated that blue fluorescence in diamonds is due to a group of three nitrogen atoms (is this 3 nitrogens and a hole, instead of 4 tetrahedral carbons? or just 3 nitrogens...in some other arrangement?)
http://lgdl.gia.edu/pdfs/W97_fluoresce.pdf
but...I thought that diamond color, or yellowness, was also caused by the presence of nitrogen. so my question is...is a D with SBF really a D? I realize color is on a scale and the amounts of impurities are minute. I guess what I am asking is, is it possible to have enough nitrogen to cause SBF without causing perceptible difference in color (i.e. a D with SBF), or is something else responsible for either the fluor, color, or both?
apologies if this is not the correct forum but as a chemist (and nerd) I am interested in these things and this did not seem quite right for Rocky Talky. also if anyone has an article to link that would be great too.
ETA I just found this
Nitrogen can also occur in various ‘states’ with different electronic properties within a diamond so that it is possible for one D coloured non-fluorescent diamond to have 10 times more nitrogen than another that is K colour and fluorescent.
but am interested in what these different 'states' are?