Chert stone object

This item is a roughly shaped, light-colored stone or lithic material resting on a wood-grain surface next to a US silver dollar coin for scale. The stone exhibits a pale grayish-white to tan coloration with rough, pitted surfaces, natural inclusions, and areas of brownish matrix or soil staining within its cavities and depressions. The physical form is irregular, with blocky, angular contours, and some concave areas resembling natural weathering or geologic formation processes. There are no clearly visible manufacturer stamps, legible maker's marks, or modern inscriptions. The owner identifies this as a prehistoric chert biface hand axe, scraper, rock art effigy from the Paleo-Indian or Archaic period, supposedly found in Guthrie, Oklahoma, measuring 7 inches by 5 inches and weighing 2 pounds; however, this user-supplied attribution is entirely unverified and requires professional archaeological or geological evaluation. Based solely on the visual evidence, the object appears to be a natural rock or stone formation, and any potential shaping or tool-use characteristics remain unauthenticated without physical tactile inspection and expert provenance analysis.

Based on what I can see in the provided image, this object presents as a roughly shaped, light-colored stone with irregular, blocky contours and natural surface pitting. The owner identifies this as a prehistoric chert biface hand axe, scraper, or rock art effigy from the Paleo-Indian or Archaic period, reportedly found in Guthrie, Oklahoma, measuring 7 inches by 5 inches and weighing 2 pounds. I cannot verify this attribution from a photo alone; visual analysis of lithic artifacts requires physical tactile inspection to evaluate whether the features are the result of deliberate human knapping or natural geologic weathering processes. My value estimate of $100–$300 assumes that the item is indeed a functional prehistoric artifact matching the owner's description. In the general market, documented archaic lithic tools from known regions can attract modest collector interest, though values vary widely based on provenance, material quality, and signs of secondary use wear. If physical inspection and expert archaeological evaluation reveal that this object is merely a natural rock formation or an unprovenanced replica, the value would likely drop significantly to a nominal geological specimen or decorative stone price, typically under $25–$50. To move beyond this working assumption, a complete evaluation would require in-person examination by a qualified lithic analyst or archaeologist to inspect flake scars, edge damage, and patina under magnification.