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 Blue Corundum Gemstone
A species of Corundum
Known for its deep blue color, sapphire is durable and highly valued as a gemstone.
Hardness :
9
Density :
4.00 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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Amethyst is a popular purple variety of quartz often used in jewelry and ornaments.