This Mysterious Stone From Egypt Contains Compounds Not Found In the Solar System

The Hypatia stone is only a few centimeters across, broken into pebble fragments, but it may very well be the most interesting rock in the world. Named for Hypatia of Alexandria, the first prominent Western woman astronomer and mathematician, the colorful rock was found in 1996 in western Egypt by Aly Barakat, a geologist working for the Egyptian Geological Survey. Barakat was studying Libyan desert glass, which appears to be similar to sea glass from the ocean, except geologists believe it might have formed roughly 28 million years ago in a meteorite impact.

http://www.popularmechanics.com