Flint is a hard stone. 

48 words
🖼️ Images & Media (8)
Flint, 9cm, 171gm.jpg
Silica pseudomorph after halite crystals...
flintbeach.jpg
Feuersteinaxt.jpg
Folsom point.png
Flint spark lighter striking.jpg
Firesteels assorted.jpg
The name of the company on the site is...
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Content adapted from Wikipedia
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Readability: FK 12.7
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Vital Level 5