The portrait of State Attorney Angela Corey was unveiled Wednesday by Zimmerman's brother, Robert Zimmerman Jr., via Twitter, the Orlando Sentinel reported.
The painting, titled "Angie," features an image of Corey the quote "I have this much respect for the American judicial system."
Robert Zimmerman said details on the sale of the painting would be made available Wednesday.
The last painting by George Zimmerman sold on eBay for $100,099.99.
In July, Zimmerman was acquitted by a Seminole County jury in the 2012 Sanford, Fla., death of Martin, 17. The case sparked national debate on Florida's "Stand Your Ground" self-defense law and racial profiling.