It’s __ Clear, Sparkling Like a Diamond
Puzzle 4 of Babysitting Piece of Cake Pack
Question is: It’s __ Clear, Sparkling Like a Diamond
and the answer is: CRYSTAL
Word Meaning:
CRYSTAL — (countable) A solid composed of an array of atoms or molecules possessing long-range order and arranged in a pattern which is periodic in three dimensions.
Definitions from Wiktionary.