Gemstone Used in Wiccan Spellwork
Puzzle 1 of Secondhand Treasures Pack
Question is: Gemstone Used in Wiccan Spellwork
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.