Definitions

Crystals- A solid formed by the solidification of a chemical and having a highly regular atomic structure.
-Middle English: cristal, from Old French, from Latin: crystallum, from Greek: krustallos, ice, crystal

Omen- Indicate by signs.
-Latin: omen

Treasure- Accumulated wealth in the form of money, jewels, etc.
-Middle English: tresure, from Old French: tresor, from Latin: thesaurus, from Greek: thesauros