Libyan Desert Glass

Physical Properties

Hardness: 6.5-7 (Mohs). Color: Pale yellow, honey, or greenish-yellow. Luster: Vitreous/glassy. Structure: Amorphous. Specific Gravity: 2.21. Cleavage: None/Conchoidal fracture.

Formation & Geological History

Formed approximately 29 million years ago during the Cenozoic era. It was created by the intense heat and pressure of a meteorite impact or airburst in the Great Sand Sea of the Sahara, melting desert sand into glass.

Uses & Applications

Mostly used for jewelry (faceted or wire-wrapped), metaphysical collecting, and scientific research.

Geological Facts

A piece of Libyan Desert Glass was found as the center scarab in King Tutankhamun's pectorals, proving it was highly valued in ancient Egypt. It contains 98% silica, making it one of the purest natural glasses.

Field Identification & Locations

Identify by its unique 'frosted' wind-abraded surface and bubbles/lechatelierite inclusions. Found exclusively in the border region between Libya and Egypt. Collectors look for clarity and wind-sculpted shapes.

Identified on: 4/22/2026

Mode: Standard