Crossword Genius

Circular diamond shape (4-3)

Ross

I believe the answer is:

rose-cut

(Other definitions for rose-cut that I've seen before include "(Of gem) finished with triangular faces" , "Hemispherically-faceted style (of diamond)" , "(Of a gem) having tiny triangular facets" .)

I've seen this clue in the LA Times.
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.