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Rocks and Minerals
"The art of cutting gems" from the Glossary of Geology, AGI.
Lapidary of Kentucky stones:
- "Kentucky Agate", for lapidary use.
- "St. Louis Green" chert, from middle part of St. Louis Formation in Estill and Powell counties. Used for lapidary and by Indians for hammer stones.
- Paoli chert, laminated- to banded-character, from Rowan and Carter counties.
- Haney chert, different shades of gray with an oolitic texture, from Carter to Powell counties in eastern Kentucky and Breckinridge and Hart counties in western Kentucky. Used for lapidary.
- Flint Ridge Flint, black, from Breathitt and Perry counties in eastern Kentucky. Used by Indians for flint knapping.