Oyster's flaw (5)

I believe the answer is:

pearl

(Other definitions for pearl that I've seen before include "Gem from a bivalve" , "White - jewel" , "prized example" , "Highly-valued thing" , "Precious jewel from the oyster" .)

I've seen this clue in The Mirror.

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.