It happened on Saturday just before 2 p.m. on 67th Street and 8th Avenue in Bay Ridge.
The 84-year-old said she was sitting when the two unidentified suspects grabbed the necklace and fled in an unknown direction.
WATCH | Surveillance video shows the incident unfold:
Police searching for 2 women who grabbed necklace off 84-year-old in Brooklyn
The woman was not injured.
Anyone with information in regard to the identity of the individual is asked to call the NYPD's Crime Stoppers Hotline at 1-800-577-TIPS (8477) or for Spanish, 1-888-57-PISTA (74782).
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