In recent years, growing efforts in 3D digitization within the Cultural Heritage (CH) field have led to increased interest in geometry-based methods and Computer Graphics tools that go beyond simple rendering and visualization. These technologies actively support archaeological research and enhance curatorial systems, allowing more comprehensive exploitation of digital data. This shift highlights the need for robust methods aimed at analyzing, characterizing, and documenting digital artifacts. In this context, this paper proposes a set of already established techniques specifically developed for CH applications, particularly archaeology. Such tools are designed for surface analysis, feature curve extraction, and characterizing geometric patterns. These methods have been tested in real-world scenarios, demonstrating their practical value in supporting research and conservation efforts.