Wedding Anniversary Celebrated After 60 Years

This page is the CodyCross answer for the clue below from Science Lab, Group 307, Puzzle 4 (Ionization).

Question is: Wedding Anniversary Celebrated After 60 Years

and the answer is: DIAMOND

Word Meaning:

DIAMOND — (uncountable) A glimmering glass-like mineral that is an allotrope of carbon in which each atom is surrounded by four others in the form of a tetrahedron.

Definitions from Wiktionary.

Wedding Anniversary Celebrated After 60 Years - Science Lab CodyCross Answers | CodyCross Solutions