The Black Diamond Library is having a book sale from 10 a.m. to 5:30 p.m. Friday and 10 a.m. to 3 p.m. Saturday at the Black Diamond Library, 24707 Roberts Dr.

All books will be half-price Saturday. Friends of the Black Diamond Library will be selling a variety of fiction and nonfiction books. Proceeds from the event support the library’s youth programs.