fossil

Fossil shark tooth in limestone or sandstone matrix

Likely fossilized shark tooth, possibly Carcharodon or Carcharhinus sp.; matrix is probably calcareous sandstone/limestone

AI-generated identification · may be incorrect

The tooth is triangular, pale golden-brown, and glossy from mineral replacement, while the matrix is cream, fine-grained, and earthy with no obvious crystal faces. Shark teeth are commonly composed of apatite (Mohs ~5), whereas the carbonate matrix is much softer (Mohs ~3).

Identified September 3, 2026More fossil →

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At a glance

Common name: Fossil shark tooth in limestone or sandstone matrix
Scientific name: Likely fossilized shark tooth, possibly Carcharodon or Carcharhinus sp.; matrix is probably calcareous sandstone/limestone
Category: fossil
Identified: September 3, 2026
Method: Standard

AI Estimated Value

Approximately $10–$50 for a common matrix specimen; $100–$500+ for a large, complete, securely identified tooth.

Not an official valuation

AI estimate for general interest only — not an appraisal. Actual value depends on condition, provenance, and market demand. Verify with a professional before buying, selling, or insuring.

This identification was generated by AI and may contain errors. Verify important details before relying on them — and never use an AI result to judge whether a specimen is safe to handle. Read the full disclaimer

Physical properties

Formation & geological history

Shark teeth were shed in marine environments and buried in sediment; groundwater later mineralized them through fossilization. The specimen’s exact geological age cannot be determined from the image, but fossil shark teeth range from Cretaceous to recent deposits.

Uses & applications

Primarily collected as a fossil; attractive examples are used in display and educational collections, not typically jewelry unless removed and polished.

Geological facts

The visible tooth has a broad triangular crown and appears to retain enamel-like luster. Identification to shark species requires clearer views of serrations, root shape, and crown proportions.

Field identification & locations

Common fossil-shark-tooth localities include coastal sediments in Florida, the Carolinas, Morocco, Indonesia, and parts of Europe. Avoid acids and vigorous cleaning, which can damage the tooth or dissolve carbonate matrix.