Transmissions of five blue sapphires
This shows the same data as for the previous (Absorbance) plot using Transmission and Wavelength axes. In addition, it shows the red fluorescence (excited with a 404nm laser) of the Australian Xtal. (thin black line - the transmission is the light blue line).
Of the other sapphires in the plot, both the synth and the lp-br show some chromium fluorescence (the ruby R-lines). The Aus and the sbp do not visibly fluoresce at all under the laser.
The presence of chromium in blue sapphires is thought, possibly, to contribute to their colouration.
Transmissions of five blue sapphires
This shows the same data as for the previous (Absorbance) plot using Transmission and Wavelength axes. In addition, it shows the red fluorescence (excited with a 404nm laser) of the Australian Xtal. (thin black line - the transmission is the light blue line).
Of the other sapphires in the plot, both the synth and the lp-br show some chromium fluorescence (the ruby R-lines). The Aus and the sbp do not visibly fluoresce at all under the laser.
The presence of chromium in blue sapphires is thought, possibly, to contribute to their colouration.