These obsidian artifacts included more than 30 hand axes, or teardrop-shaped stone tools, averaging about 4.5 inches (11.5 centimeters) long and 0.7 pounds (0.3 kilograms).

Here's an overview of Obsidian, including its metaphysical properties, meaning, and uses: Obsidian meaning Obsidian is associated with the zodiac sign Scorpio and the Life Path Number 1.

Researchers uncovered nearly 600 stone tools, almost exclusively made of obsidian, in one section of the cliff side. The artifacts were over 1.2 million years old, the study said.

Underwater archeologists near Capri found a Neolithic shipwreck with obsidian artifacts, hinting at ancient seafaring and trade networks in the Mediterranean's Stone Age.