Graphic Granite

Physical Properties

Hardness: 6-7 (Mohs); Color: Creamy white, pink, or light blue matrix with grey/smoky inclusions; Luster: Vitreous to pearly; Crystal structure: Monoclinic (feldspar) and Hexagonal (quartz); Specific Gravity: 2.5-2.7

Formation & Geological History

Formed in granitic pegmatites during the late stages of magma crystallization. The unique texture results from the simultaneous growth of quartz and alkali feldspar. They can date from hundreds of millions to billions of years old.

Uses & Applications

Primarily used as an ornamental stone, for carving, in jewelry (cabochons), as floor tile in high-end construction, and as a geological teaching specimen.

Geological Facts

The name comes from its resemblance to ancient Cuneiform or Hebraic writing. The quartz 'characters' are actually a single skeletal crystal that permeates the feldspar matrix.

Field Identification & Locations

Identify in the field by the distinct 'runic' pattern where dark quartz stems look like written characters against a lighter feldspar background. Common in pegmatite fields like those in Colorado, Maine, and Madagascar.

Identified on: 4/27/2026

Mode: Standard