glass bead doped with 4% Dysprosium – NEW!
diameter ~ 13 mm – ~ 0.8 – 1 gram
Nice glass bead. Each one hand crafted. Under UV excitation the glass shows strong fluorescence with two strong peaks @ 485nm(blue) and 573nm (yellow)
Please do not use common UV LEDs, they produce wavelengths above 390 nm and are not suitable! Blacklight tubes work best! The UV lamp used for the photos has a wavelength of 365nm