Beschreibung

Glass bead doped with 1% Vanadium 4+ and 5+ Ions
Size about 13mm – Weight ~ 1 . 1.4 grams – Material: Ba Phosphate glass
Nice glass bead. Each one handmade of phosphate glass in our lab.

The green color does not come from the V3+ state but from a mixture of +4 and +5 states