Crossword Genius

Crystal-lined stone (5)

Ross

I believe the answer is:

geode

'crystal-lined stone' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for geode that I've seen before include "Crystal-lined cavity in rock" , "Druse" , "Small rock cavity" .)

I've seen this clue in the Newsday and The Wall Street Journal.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.