Rock Identifier
Moldavite (Tektite (Natural Silicate Glass, SiO2 + Al2O3)) — gemstone
gemstone

Moldavite

Tektite (Natural Silicate Glass, SiO2 + Al2O3)

AI-generated identification · may be incorrect

Hardness of 5.5 on the Mohs scale, deep forest green color, vitreous luster, amorphous crystal structure with no cleavage, and a specific gravity around 2.34.

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Physical properties

Hardness of 5.5 on the Mohs scale, deep forest green color, vitreous luster, amorphous crystal structure with no cleavage, and a specific gravity around 2.34.

Formation & geological history

Formed approximately 15 million years ago by a massive meteorite impact that created the Ries crater in southern Germany, fusing extraterrestrial and terrestrial material.

Uses & applications

Extremely popular in high-end jewelry, spiritual collections, and as a rare investment-grade gemstone.

Geological facts

Moldavite is a tektite, meaning it is a glass formed from meteorite impact melts rather than volcanic activity. Its unique bubble inclusions and worm-like surface textures are hallmarks of authenticity.

Field identification & locations

Identified by its distinctive deep bottle-green color and characteristic pitted, sculptured surface texture. Found primarily in the Czech Republic along the Vltava River basin.