Comet impact glass! 28,500,000 years old!

In the southeastern spur of North Africa’s Great Sand Sea, there are several fields of luminous, yellow-green glass known as Libyan Desert Glass (LDG). Due to the lack of any visible impact crater, the most likely source is a low-density asteroid or comet airburst explosion leading to the fusion of silica-rich sands roughly 28,500,000 years ago.

This specimen is a 3.951" chunk of Libyan Desert Glass. It is a one-of-a-kind specimen that ships with an official Certificate of Authenticity.