Description

Holmium Potassium phosphate glass – 17mol% Ho2O3
diameter ~ 20 mm – 4.57 grams
Material: HoKP Glass

Very rare glass species with high Holmium content!
Each one hand crafted in our lab.

Depending on the sort of light you get different colors of the bead

Yellowish at daylight or bulb
raspberry red at fluorescent light (all kind of tubes LCD screen, Neon tubes)