Chemical Element Used to Make Vivid Blue Glass
This page is the CodyCross answer for the clue below from Night Life, Group 1758, Puzzle 3 (Constellations).
Question is: Chemical Element Used to Make Vivid Blue Glass
and the answer is: COBALT
Word Meaning:
COBALT — A chemical element (symbol Co) with an atomic number of 27: a hard, lustrous, silver-gray metal.
Definitions from Wiktionary.