A forensic anthropologist has determined the object, which resembled a decaying finger with an acrylic french-manicured nail, is neither human nor animal.
Brielle police were called July 30 after a homeowner made the discovery. Officials suspected it may have been dropped by a bird.
The Monmouth County medical examiner could not verify whether the object was a human finger.
State Police Sgt. Stephen Jones says a forensic anthropologist X-rayed it and determined it was made of an unidentified substance.
Information from: Asbury Park Press, http://www.app.com