Erbium-Doped Lithium Tellurium Borate Glass

This erbium-doped lithium tellurium borate glass features a brilliant strawberry-pink color that becomes even more vivid under white fluorescent or tube lighting. Its striking optical appearance is produced by the characteristic absorption bands of Er³⁺ ions.

The high erbium concentration also gives the glass noticeable paramagnetic properties, allowing it to be visibly attracted by a strong neodymium magnet.

An exceptional specimen for scientists, educators, collectors, and anyone interested in rare-earth-doped optical materials.