Modern obsidian scalpels look nothing like the decorative flint-knapped knives of Neolithic man ... concedes that the Stone Age scalpels are not for everyone. “If it was let loose on the ...

Flint, chert, jasper, chalcedony, quartz, and obsidian are a few that do. Try the different types of rock in your area to see what works best. There are two ways to get sharp flakes of rock for your ...

The collection of stone knives is from the little-known ... knowledge that such tissue remains had been identified on obsidian knives. "This is a compelling demonstration that these knives were ...

Known as Obsidian Cliff ... Over the last 11,500 years or so, the stone has been fashioned into deadly knives, razor-sharp spear points, darts for atlatls, or spear-throwers, and arrowheads.

Underneath sat a stone box. Inside the box sat three blocks of copal tree resin, 59 pocket knives and seven obsidian stone knives, all between 4 and 6 inches in length, the institute said.

MEXICO CITY — Traces of blood and fragments of muscle, tendon, skin and hair found on 2,000-year-old stone knives have given researchers the first conclusive evidence that the obsidian blades ...