Libyan Desert Glass

A variety of Metamorphic

Uncommon
Libyan Desert Glass specimen - rock identification

What is Libyan Desert Glass?

Libyan Desert Glass is a rare rock that can only be found in the Western Desert of Egypt, which is where it gets its name. This rock is primarily made from pure molten silica glass called lechatelierite. While the origins of libyan Desert Glass are unknown, it is strongly suggested that this rock was regarded by ancient Egyptians as a gemstone.

Optical Properties

Refractive Index
1.46-1.465

Libyan Desert Glass Market Value Calculator

Estimate the market value of Libyan Desert Glass using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.

Preview only. Full pricing comps and valuation report in the app.

Libyan Desert Glass Localities Map

See where Libyan Desert Glass is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

Map preview
North ZoneCentral RidgeSouth Basin

Interactive map layers and collecting notes are available in the app.

Health & Safety Information

  • ⚠️Physical Toxicity: Quartz, silica, crystalline silica and flint are non-toxic materials, but very fine dust containing quartz, known as respirable crystalline silicon (RCS), can cause serious and fatal lung disease. Lapidaries should exercise caution when cutting silica.

More Images

Libyan Desert Glass specimen 2
© Jon Bodsworth

Quick Facts

Physical Properties

Color
Yellow, green, brown
Hardness (Mohs)
6.5
Density
2.2 - 2.65 g/cm³
Streak
Dark brown
Luster
Vitreous

Chemical Properties

Chemical Formula
SiO2

Also Known As

Libyan Desert GlassLibyan Gold Tektite
FREE APP
4.7
Ruby Glint rock identifier app

Identify Libyan Desert Glass Instantly

  • Snap a photo, get instant results
  • 6,700+ rocks, minerals & crystals
  • Discover collecting spots near you

Related Metamorphic

Explore More Rocks & Minerals