Prehistoric East Asian Anthropomorphic Face Jade Specimen 02(EANJ_FACE_02): Digital Documentation of Morphology, Perforations, Surface Alteration, and Tool Marks

1. Object Overview This dataset documents a single specimen of a face-shaped object, belonging to a group of morphologically comparable anthropomorphic face-form artifacts.The object has been systematically recorded through multi-angle photographic documentation, with the aim of comprehensively presenting its overall morphology, surface preservation, perforation structure, and observable manufacturing traces. These images are intended to provide reliable visual reference material for subsequent comparative studies and morphological analyses. Basic Measurements Length: 5.4 cm Width: 4.83 cm Thickness: 0.8 cm Weight: 35 g All measurements are provided solely for objective documentation and research reference. 2. Morphology and Iconography The object presents a stylized human face rendered in a highly schematic manner. Facial features are reduced to minimal linear elements, with both the eyes and mouth expressed as incised grooves rather than modeled volumes. Interruption in the Chaîne OpératoireAn initial set of perforations located at the upper rear of the object appears to have failed during the manufacturing process (or an early phase of use), likely due to localized material fracture. Repositioned Perforation ExecutionFollowing this failure, the artisan reoriented the drilling position slightly below the damaged area and successfully completed a new set of through-perforations. This adjustment demonstrates continuity in the technical sequence while also reflecting adaptive modification within the operational chain. Micro-wear CharacteristicsThe two sets of perforations exhibit comparable diameters and drilling logic. Although spiral drill striations along the perforation walls are subdued—possibly due to surface alteration or patina formation—the spacing and rhythm of these traces suggest a consistent drilling sequence.