mineral

Blue and White Quartz

Crystalline Silicon Dioxide with inclusions (SiO2)

Hardness: 7 (Mohs scale); Color: Banded or mottled blue, grey, and white; Luster: Vitreous to waxy (when polished); Crystal System: Hexagonal; Specific Gravity: 2.65

Hardness: 7 (Mohs scale)
Color: Banded or mottled blue, grey, and white
Luster: Vitreous to waxy (when polished)

Identified July 2, 2026More mineral →

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Physical properties

Hardness: 7 (Mohs scale); Color: Banded or mottled blue, grey, and white; Luster: Vitreous to waxy (when polished); Crystal System: Hexagonal; Specific Gravity: 2.65

Formation & geological history

Formed in hydrothermal veins or as a secondary mineral in pegmatites. The blue coloration is often due to microscopic inclusions of blue minerals such as dumortierite, magnesioriebeckite, or crocidolite within the quartz matrix.

Uses & applications

Primarily used as a decorative stone, in lapidary work for cabochons and tumbled stones, and widely used in metaphysical or healing crystal collections.

Geological facts

While clear quartz is one of Earth's most abundant minerals, natural blue quartz is relatively rare. The blue color is an optical effect caused by the scattering of light by tiny inclusions, similar to why the sky appears blue (Rayleigh scattering).

Field identification & locations

Identified by its high hardness (it will scratch glass) and lack of cleavage. Often found in Brazil, Madagascar, and the United States. Collectors should look for the characteristic waxy luster and internal fibrous or granular inclusions.

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