A method of manufacturing a diamond tool intermediate, characterized by the method comprising: a first step of preparing a single-crystal diamond having a first facet plane that is a plane perpendicular to a specific crystal orientation; a second step of fixing the single-crystal diamond to a support based on the first facet plane; a third step of capturing an X-ray image of the single-crystal diamond, the X-ray image being an X-ray image in which a crystal orientation of the single-crystal diamond is associated with an X-ray emission direction by associating the support to which the single-crystal diamond is fixed with the X-ray emission direction; a fourth step of specifying a position of an inclusion of the single-crystal diamond in the single-crystal diamond based on the X-ray image; a fifth step of determining whether or not a shape of the diamond tool intermediate is extractable from the single-crystal diamond with the inclusion being not included in an inclusion-excluded region, the shape of the diamond tool intermediate being a shape in which diamond crystal orientation and outer shape set in advance are associated with each other and to a portion or entirety of which the inclusion-excluded region is set, the determination being made based on the shape of the diamond tool intermediate, the X-ray image, and the position of the inclusion of the single-crystal diamond in the single-crystal diamond, the position of the inclusion of the single-crystal diamond in the single-crystal diamond being specified in the fourth step; and a sixth step of extracting, from the single-crystal diamond based on a result of the determination in the fifth step, the shape of the diamond tool intermediate with the inclusion being not included in the inclusion-excluded region. a first step of preparing a single-crystal diamond having a first facet plane that is a plane perpendicular to a specific crystal orientation; a second step of fixing the single-crystal diamond to a support based on the first facet plane; a third step of capturing an X-ray image of the single-crystal diamond, the X-ray image being an X-ray image in which a crystal orientation of the single-crystal diamond is associated with an X-ray emission direction by associating the support to which the single-crystal diamond is fixed with the X-ray emission direction; a fourth step of specifying a position of an inclusion of the single-crystal diamond in the single-crystal diamond based on the X-ray image; a fifth step of determining whether or not a shape of the diamond tool intermediate is extractable from the single-crystal diamond with the inclusion being not included in an inclusion-excluded region, the shape of the diamond tool intermediate being a shape in which diamond crystal orientation and outer shape set in advance are associated with each other and to a portion or entirety of which the inclusion-excluded region is set, the determination being made based on the shape of the diamond tool intermediate, the X-ray image, and the position of the inclusion of the single-crystal diamond in the single-crystal diamond, the position of the inclusion of the single-crystal diamond in the single-crystal diamond being specified in the fourth step; and a sixth step of extracting, from the single-crystal diamond based on a result of the determination in the fifth step, the shape of the diamond tool intermediate with the inclusion being not included in the inclusion-excluded region.