Pink Granite

Physical Properties

Hardness: 6-7 Mohs; Color: Pink, white, and grey speckled; Luster: Dull (weathered) to vitreous (crystals); Structure: Phaneritic (coarse-grained) crystalline; Cleavage: None (individual minerals have cleavage); Specific Gravity: 2.63 to 2.75

Formation & Geological History

Formed from the slow cooling of silica-rich magma deep underground (plutonic). The pink color comes from potassium feldspar (orthoclase). This specimen appears water-worn, likely from a river or glacial deposit.

Uses & Applications

Used in construction, countertops, monuments, and as decorative landscaping stones. In cobble form, it is used for paving or garden features.

Geological Facts

Granite makes up a large portion of the Earth's continental crust. The pink hue specifically indicates a high concentration of K-feldspar. It is one of the hardest and most durable common rocks.

Field Identification & Locations

Identified by its 'salt and pepper' look with distinct pink crystals. Look for interlocking mineral grains of quartz (glassy), feldspar (pink/white), and mica (dark specks). Found globally in continental shields.

Identified on: 4/24/2026

Mode: Standard