The incident happened at about 3:45 p.m. on the sidewalk in front of the Port Authority Bus Terminal at 8th Avenue and 41st Street.
A woman from New Jersey lost the ring when it accidentally fell through a sidewalk subway grate.
Port Authority Emergency Service Unit Police Officers Brian Fink and Chris Johnsen of PAPD ESU Truck 5 responded and went to work.
They removed the grate, managed to find the ring and returned it to the relieved woman.
She said the ring simply slipped off her finger.
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