Identifying flint tools is a mixed bag. In some cases, its EASY – a handaxe or arrowhead is pretty unmistakable. But tools like scrapers, flakes and blades can just look like broken bits of stone. Likewise, naturally broken bits of stone can look a bit like scrapers, flakes and blades.
The Preferred Tool-Making Material  The conchoidal fracture of flint causes it to break into sharp-edged pieces. Early people recognized this property of flint and learned how to fashion it into knife blades, projectile points, scrapers, axes, drills, and other sharp tools.
What rocks are good for Flintknapping?
The best rocks for flint-knapping are chert, flint, chalcedony, quartzite, jasper, and obsidian. Chert and flint are silica-rich rocks found throughout the Midwest in limestone and dolomite deposits.
What does obsidian look like?
Obsidian has a glassy lustre and is slightly harder than window glass. Though obsidian is typically jet-black in colour, the presence of hematite (iron oxide) produces red and brown varieties, and the inclusion of tiny gas bubbles may create a golden sheen.
What stone Can you Knapp?
Stones most often used as cutting tools are flint, chert, obsidian, jasper, and novaculite, to name a few. These stones share the quality of a fine grain, so when fractured, they create a very sharp edge, and the force applied to the stone runs through them smoothly.
How can you tell if something is Flint?
Look for a glossy surface on the rock. Flint often displays a natural, glassy luster similar to pencil lead. If it was just broken, the luster may seem dull and somewhat waxy to the touch. You can usually rub away or sand this cortex to reveal more of the surface luster.
How do you know if obsidian is real?
Examine the obsidians general presence. It has a distinctive appearance of smooth glass. Obsidian is a frozen liquid that contains small amounts of mineral impurities. See the color Because pure obsidian is usually dark, on rare occasions it may also be almost white.
Is obsidian worth any money?
There is no set value or market for obsidian, unlike silver and gold, where there are world markets and indices. Obsidian is not an expensive stone. This being the case, a piece of obsidian can cost $2 or $100 depending on the quality and processing it has undergone, you can shop at Amazon.