Properties
| Category | Glass |
|---|---|
| Formula | SiO2(+Al2O3) |
| Crystal system | Amorphous |
| Color | Olive green |
| Mohs scale hardness | 5.5 to 7 |
| Luster | Vitreous |
| Diaphaneity | Opaque, translucent, transparent |
| Specific gravity | 2.32 to 2.38 |
From the Wikipedia article
Moldavite is a forest green, olive green or blue greenish vitreous silica projectile glass formed by a meteorite impact in southern Germany that occurred about 15 million years ago. It is a type of tektite and a gemstone. Material ejected from the impact crater includes moldavite, which was strewn across parts of Germany, the Czech Republic and Austria.
Source
Source record: crystal-compendium/moldavite/minerals.json. Fetched from English Wikipedia by the operator 2 October 2026.
https://en.wikipedia.org/wiki/Moldavite — revision id 1374689278. Text and properties from Wikipedia, licensed CC BY-SA 4.0.