Rock Identifier
Try the Rock Identifier app on your phone to identify thousands of rocks for free.
Learn more info about rocks from our rich and growing database.
Scan QR code to download
Rock Identifier
Try the Rock Identifier app on your phone to identify thousands of rocks for free.
Learn more info about rocks from our rich and growing database.
Scan QR code to download
The Natural Glass
A species of Volcanic Glass
Known for its glassy texture and sharp edges, obsidian has been used for tools since ancient times.
Hardness :
5 - 5.5
Density :
2.4 g/cm³
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general info about the rock
luster
diaphaneity
colors
magnetism
tenacity
cleavage
fracture
streak
crystalSystem
hardness
density
Rock Identifier
Portable rock knowledge, powered by AI.
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