AI identification & appraisal estimate

Prehistoric Chert Arrowhead or Flaked Stone Tool

Submitted photo of Prehistoric Chert Arrowhead or Flaked Stone Tool
Photo submitted by the user — not generated by AI

User's notes

Prehistoric knife found in Guthrie OK. 2.5" x 1"

These notes were written by the person who submitted this item. Appraiser.AI has not verified them, and the AI's identification and estimate may rely on them.

AI Estimated Value

Not an official valuation

$45.00 - $75.00

AI estimate as of February 17, 2026 · verify with a professional before acting

AI-Generated · Verify before acting

Everything on this page is generated by AI for informational purposes only. AI can make mistakes — the AI may misidentify items or misattribute them (artist, maker, brand, designer, origin, era). This is not an official valuation and should not be used for insurance, sale, tax, estate, legal, or lending purposes — or any decision requiring a certified appraisal. It is not an authoritative claim about any person, brand, or rights holder — do not share or rely on it as a factual statement about a third party. Always consult qualified professionals before making financial decisions.

This analysis also relies on unverified notes provided by the user, which may be incomplete or inaccurate and could affect the result.

Read the full disclaimer

AI Item Analysis

This item is a prehistoric lithic artifact, often referred to as a projectile point or stone knife. Measuring approximately 2.5 inches in length and 1 inch in width, the object is crafted from a high-quality chert or flint material, likely sourced locally to the Oklahoma region (potentially Kay County Chert or similar). The color palette is a varied mix of earthy tones, including tans, greys, and cream-colored hues with visible mineral patination consistent with long-term soil exposure. The construction demonstrates bifacial pressure flaking along the edges to create a sharp, functional blade. The form is somewhat asymmetrical, which may indicate it was used as a hafted knife or a preform rather than a finished arrow tip. There are visible flake scars across the body and a slight curvature to the profile. Condition-wise, the piece shows ancient wear and minor chipping along the margins, though it remains largely intact without significant modern damage. This style of lithic tool is characteristic of North American indigenous craftsmanship, possibly dating to the Woodland or Archaic periods (approx. 1,000 to 5,000 years old). The quality of the knapping suggests a skilled maker, as evidenced by the thin cross-section and controlled edge work.

AI Appraisal Report

I have carefully examined the provided images and descriptions of the 2.5-inch lithic artifact recovered near Guthrie, Oklahoma. The piece appears to be a bifacially flaked tool, likely an ovate knife or a late-stage preform, rather than a finished projectile point. The material is consistent with Kay County Chert (Florence A), showing the characteristic yellowish-tan hue and distinctive patination expected from the region. The flaking pattern suggests a Woodland to Late Archaic period origin. From a visual standpoint, the 'ancient' wear and mineral staining appear consistent with authentic prehistoric items; however, the market for lithic artifacts is heavily saturated with modern reproductions. Based on current market trends for unauthenticated 'field finds' of this size and material, the value remains modest. Higher-value artifacts generally require a specific named typology (e.g., Clovis or Folsom) or exceptional aesthetic symmetry, which this asymmetrical tool lacks. Significant limitations exist when appraising via digital imagery. I cannot verify the presence of microscopic 'hinge' fractures, modern steel tool marks, or the specific chemical nature of the patina. For a conclusive authentication, an in-person microscopic examination is required to verify the absence of modern grinding and to confirm authentic 'sickle gloss' or usage wear. Furthermore, documented provenance (legal chain of custody/private land permission) is essential to ensure compliance with the Archaeological Resources Protection Act (ARPA) and to maximize resale value. Without a professional COA (Certificate of Authenticity) from a recognized lithic expert, the item is valued as a decorative or educational specimen rather than a high-end collector's piece.

Keep exploring

More prehistoric native american artifacts appraisals

Get your items appraised

Instant AI-powered appraisal estimates from a photo

Browse More Appraisals