igneous
Granite
Granite
Hardness: 6-7 Mohs; Color: Salt and pepper (white, gray, black, pink); Luster: Vitreous to pearly; Crystal structure: Phaneritic (coarse-grained); Specific gravity: 2.63-2.75
- Hardness
- 6-7 Mohs
- Color
- Salt and pepper (white, gray, black, pink)
- Luster
- Vitreous to pearly
Identified More igneous →
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Physical properties
Hardness: 6-7 Mohs; Color: Salt and pepper (white, gray, black, pink); Luster: Vitreous to pearly; Crystal structure: Phaneritic (coarse-grained); Specific gravity: 2.63-2.75
Formation & geological history
Formed by the slow crystallization of magma below Earth's surface. It is a plutonic rock found in continental crust, often dating back hundreds of millions to billions of years.
Uses & applications
Widely used as dimension stone in construction for countertops, floor tiles, paving stones, curbing, and monuments due to its durability.
Geological facts
Granite is one of the most common rocks on the Earth's surface and makes up a large part of the continental crust. The word comes from the Latin 'granum', meaning a grain.
Field identification & locations
Identify by its visible interlocking crystals of quartz, feldspar, and mica. It is found in large mountain ranges and batholiths globally. Collectors look for unique mineral inclusions or rare colors.
