mineral

Blue Quartz (potentially Dumortierite-included)

Silicon Dioxide (SiO2) with inclusions

Hardness: 7 on Mohs scale; Color: Sky blue to deep azure; Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific gravity: 2.65

Hardness: 7 on Mohs scale
Color: Sky blue to deep azure
Luster: Vitreous to waxy

Identified May 21, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Sky blue to deep azure; Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific gravity: 2.65

Formation & geological history

Formed in igneous pegmatites or metamorphic environments where quartz crystallizes with microscopic inclusions of blue minerals like dumortierite, magnesioriebeckite, or crocidolite.

Uses & applications

Primarily used for ornamental purposes, lapidary arts, jewelry (cabochons), and as a collector's specimen. It is also popular in holistic and metaphysical communities.

Geological facts

Unlike most blue gemstones, the color in blue quartz is usually caused by the scattering of light (Rayleigh scattering) by tiny inclusions rather than chemical substitution in the quartz lattice itself.

Field identification & locations

Identify by its hardness (scratches glass), lack of cleavage, and the presence of fibrous or cloudy blue inclusions when viewed under magnification. Commonly found in Brazil, Spain, and Virginia, USA.

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