Stones/Gems with E

• emerald

  A classic green gemstone; totally fits.

• Ekanite

  A real rare gemstone mineral. Valid!

• Emeralds

  Plural is fine; real gemstones indeed.

• euclase

  Yes, euclase is a known gemstone mineral.

• Elbaite
• emerlad
• Elephant
• Element
• Ethiopian opal
• Emerals
• Ella
• Einsteinium
• emerld
• eggs

The words in the list Stones/Gems with E come from players of the word game City, Country, River.