Strontium Bismuth Zinc phosphate glass! NEW!
Diameter about 10mm – weight 1 – 1.2 grams
individually handmade in our lab.
Beautiful optical glass beads doped with metal ions.
Elaborately and individually manufactured by us in the laboratory from highly pure reagents.
Gorgeous beads showing the typical colors of different metal ions in different oxidation states.
They can be used for save demonstration of different colors of the metal compounds or just for collecting.