The article discusses the possibilities of using 3D-fixation technologies to create an exact digital copy of stone artifacts with irregular geometry using photogrammetry. This technology can be used for two main purposes: Firstly, as a means of creating and long-term storage of digital copies of objects for a more complete visualization and representation of the object, which may be necessary for various purposes, and easy access to databases; The second goal can be considered to be analytical studies - measurements of dimensions, volumes, surface areas, densities, roughness, etc.; determination of geometric characteristics - center of mass, axes of symmetry, deviations, construction of sections. In the process of research, a digital copy of a stone ice pick from the Firsovo-XI site (Barnaul Stretch of the Ob) was created. The product is made of a large elongated block of very viscous dark green stone. As a result of the study of traces of microwear, it turned out that this tool is a pawn, i.e. used to cut a hole in the ice. Traces of micro wear are concentrated on the ground, cone-shaped edge of the product. This edge is the working part of the tool. Polishing of the working part, traces of microfinishing, dislocation of wear is typical for such tools as a ice pick. The circumstances of the discovery do not allow us to accurately determine the age of the artifact, but most likely this item is synchronous with the Neolithic burials of Firsovo-XI. The paper states that the construction of orthogonal projections of an object is not a trivial task in working with stone artifacts. The use of photography leads to the inevitable distortion of perspective - the deformation or transformation of the object and its surrounding area. From such projections it is impossible to take measurements, make sections and conduct a study. The construction of clear projections with any angular step, without any perspective distortions, as well as the construction of sections, setting dimensions, is the basic function of most 3D graphics packages. An equally important function is rendering under a given illumination - that is, the process of constructing the final two-dimensional image of an object at the angle and intensity of the incident light that the researcher needs, etc. The position of the light source can help solve the problem of contrast sensitivity, that is, the ability of the eye to distinguish the minimum difference in brightness between the object in question or two adjacent surfaces. It is concluded that the absence of physical limitations in the use of the obtained 3D models makes photogrammetry an extremely useful tool both in research and for data exchange, public demonstrations and remote collaboration. It is noted that photogrammetry can be used as a tool for creating exact solid copies of objects using a 3D printer, as museum exhibits.