Obsidian is a volcanic glass used to make tools for Stone-Age man – and for modern surgeons.

X-ray technology has allowed researchers a glimpse at the reaches of the Yellowstone landmark’s prized stone and its importance to Indigenous people.

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 ...

Obsidian, naturally occurring volcanic glass, is smooth, hard, and far sharper than a surgical scalpel when fractured, making it a highly desirable raw material for crafting stone tools for almost ...

Obsidian, naturally occurring volcanic glass, is smooth, hard, and far sharper than a surgical scalpel when fractured, making it a highly desirable raw material for crafting stone tools for almost ...

In the upcoming Obsidian game Grounded 2, one of the premier features that’s new in the sequel is the ability to mount a bug like a horsey and ride it around. And that feature is also one of the ...

The massive flow of glassy black obsidian and gray pumice is one of Oregon's best volcanic attractions, both for the sheer awe it produces and its geological significance in the Pacific Northwest.

Working in a Bronze Age graveyard in Ikiztepe, Turkey, archaeologist Önder Bilgi has uncovered 14 skulls with rectangular cut marks. He believes the Ikiztepe people used obsidian "scalpels," found ...

Sophisticated skull surgery Önder Bilgi talks about his discovery of a razor-sharp 4000-year-old scalpel and what it was originally used for Where are you digging? At an early Bronze Age ...

Unlike steel scalpels, which have a microscopically jagged edge, obsidian cleaves into a fine and continuous edge when properly cut.