Modern obsidian scalpels look nothing like the decorative flint-knapped knives of Neolithic man, often resembling their modern counterparts in everything except for the blade edge, but Green said ...

In fact, obsidian tools continued to be used throughout the ancient Middle East for millennia beyond the introduction of metals, and obsidian blades are still used today as scalpels in specialised ...

Properly knapped obsidian blades, when new, are 300 to 500 times as sharp as a surgeon’s scalpel, says Mr. Schindler.

Sophisticated skull surgery Önder Bilgi talks about his discovery of a razor-sharp 4000-year-old scalpel and what it was originally ... We have just found two cutting blades made of obsidian, ...

A greenish obsidian blade, believed to have been found on the Texas Panhandle, may be from the 16th-century expedition led by the Spanish explorer Francisco Vázquez de Coronado, a new study suggests.

In fact, obsidian tools continued to be used throughout the ancient Middle East for millennia beyond the introduction of metals, and obsidian blades are still used today as scalpels in specialised ...