Granite

Coarse-grained, speckled pink-gray rock with a granular texture and likely interlocking crystals; hardness about 6–7 Mohs, vitreous quartz luster, and no prominent cleavage as a whole. Typical density is 2.6–2.7 g/cm³.

An intrusive igneous rock formed when silica-rich magma cooled slowly deep underground, allowing large crystals to grow. Most granite formed during Precambrian to Phanerozoic continental crust formation, though the specimen’s age cannot be determined from the image.

Widely used as dimension stone, countertops, monuments, building facades, paving, and crushed aggregate; attractive polished pieces are also sold as decorative specimens.

The visible pink grains are likely potassium feldspar, gray translucent grains quartz, and dark flecks biotite or hornblende. Its coarse texture distinguishes it from rapidly cooled volcanic rocks such as rhyolite.

Common worldwide in continental mountain belts and exposed plutons; major sources include India, Brazil, China, Scandinavia, and the United States. Identify it by its visible interlocking quartz, feldspar, and dark mineral grains; a hand lens and streak/acid tests can improve confirmation.