Crossword Genius

Iridescent stone (4)

Ross

I believe the answer is:

opal

'iridescent stone' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for opal that I've seen before include "Milky stuff that's hard" , "Type of gem" , "Type of gemstone" , "precious jewel" , "Semiprecious stone of white and bluish colour" .)

I've seen this clue in the LA Times 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.