| Age at missing | 30 years old |
| Case ID | kathy-jean-diamond |
| City en | Las Vegas |
| City geo ID | 5506956 |
| City slug | las-vegas |
| Classification | Endangered Missing |
| Classification en | Endangered Missing |
| County en | |
| County fips ref | 32003 |
| County slug | clark |
| Created at | 2026-01-12T12:43:27+00:00 |
| Date of birth | |
| Disappearance details | Diamond was last seen in the 4400 block of Boulder Highway in Las Vegas, Nevada on February 7, 1987. She told her oldest son that she was going to the store and would return later. She left with a friend in a maroon and red 1982 Mercury Capri with the California license plate number 1JWZ930. Later that night, Diamond's youngest son woke up with a nosebleed and couldn't find his mother, so asked his older brother for help with it. Afterwards the boys went back to sleep. When they woke up in the morning for school, Diamond still wasn't back home. She has never been seen or heard from again. Her boyfriend reported her missing on February 8. In May, three months after Diamond disappeared, her vehicle which she was last seen in was found abandoned in a parking lot in the 4400 block of Jimmy Durante Drive, near her apartment. The car was processed for evidence but nothing was found. The circumstances of Diamond's disappearance are unclear. Investigating Agency Las Vegas Metropolitan Police Department 702-828-3111 Source Information NamUs Las Vegas Metropolitan Police Department 3 News Updated 3 times since October 12, 2004. Last updated October 7, 2025; details of disappearance updated. |
| Disappearance details en | Diamond was last seen in the 4400 block of Boulder Highway in Las Vegas, Nevada on February 7, 1987. She told her oldest son that she was going to the store and would return later. She left with a friend in a maroon and red 1982 Mercury Capri with the California license plate number 1JWZ930. Later that night, Diamond's youngest son woke up with a nosebleed and couldn't find his mother, so asked his older brother for help with it. Afterwards the boys went back to sleep. When they woke up in the morning for school, Diamond still wasn't back home. She has never been seen or heard from again. Her boyfriend reported her missing on February 8. In May, three months after Diamond disappeared, her vehicle which she was last seen in was found abandoned in a parking lot in the 4400 block of Jimmy Durante Drive, near her apartment. The car was processed for evidence but nothing was found. The circumstances of Diamond's disappearance are unclear. Investigating Agency Las Vegas Metropolitan Police Department 702-828-3111 Source Information NamUs Las Vegas Metropolitan Police Department 3 News Updated 3 times since October 12, 2004. Last updated October 7, 2025; details of disappearance updated. |
| Disappearance details word count | 202 |
| Distinguishing marks | White female. Brown hair, green eyes. Diamond has a scar under her nose and a mole under her right eye. |
| Distinguishing marks en | White female. Brown hair, green eyes. Diamond has a scar under her nose and a mole under her right eye. |
| Full name | Kathy Jean Diamond |
| Full name en | Kathy Jean Diamond |
| Height | 5'3 |
| ID | 3900 |
| Investigating agency | Las Vegas Metropolitan Police Department 702-828-3111 Source Information NamUs Las Vegas Metropolitan Police Department 3 News |
| Missing since | 1987-02-07 |
| Official last updated | 2025-10-07 |
| Official update count | 3 |
| Official update history | details of disappearance updated. |
| Path | nevada/clark/las-vegas |
| Race | White |
| Race en | White |
| Sex | Female |
| Source info | NamUs Las Vegas Metropolitan Police Department 3 News |
| State en | Nevada |
| State ref | NV |
| State slug | nevada |
| Status | active |
| Updated at | 2026-01-12T12:43:27+00:00 |
| URL path | nevada/clark/las-vegas |
| Weight | 130 pounds |
Diamond was last seen in the 4400 block of Boulder Highway in Las Vegas, Nevada on February 7, 1987. She told her oldest son that she was going to the store and would return later. She left with a friend in a maroon and red 1982 Mercury Capri with the California license plate number 1JWZ930. Later that night, Diamond’s youngest son woke up with a nosebleed and couldn’t find his mother, so asked his older brother for help with it. Afterwards the boys went back to sleep. When they woke up in the morning for school, Diamond still wasn’t back home. She has never been seen or heard from again. Her boyfriend reported her missing on February 8. In May, three months after Diamond disappeared, her vehicle which she was last seen in was found abandoned in a parking lot in the 4400 block of Jimmy Durante Drive, near her apartment. The car was processed for evidence but nothing was found. The circumstances of Diamond’s disappearance are unclear. Investigating Agency Las Vegas Metropolitan Police Department 702-828-3111 Source Information NamUs Las Vegas Metropolitan Police Department 3 News Updated 3 times since October 12, 2004. Last updated October 7, 2025; details of disappearance updated.