mineral

Blue-dyed Quartz Druzy

Silicon Dioxide (SiO2) with artificial pigment

Hardness: 7 (Mohs scale), Color: Cobalt to Navy Blue (artificially dyed), Luster: Vitreous, Crystal structure: Trigonal (hexagonal prisms), Cleavage: None/Conchoidal fracture, Specific gravity: 2.65.

Identified May 3, 2026More mineral →

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Physical properties

Hardness: 7 (Mohs scale), Color: Cobalt to Navy Blue (artificially dyed), Luster: Vitreous, Crystal structure: Trigonal (hexagonal prisms), Cleavage: None/Conchoidal fracture, Specific gravity: 2.65.

Formation & geological history

Natural quartz crystals form from cooling silica-rich hydrothermal solutions in cavities of igneous or sedimentary rocks. This specific specimen has undergone a secondary human-made process where blue dyes were introduced into the micro-cracks and pores of the crystal cluster.

Uses & applications

Primarily used for decorative home decor, metaphysical collecting, and inexpensive costume jewelry. Natural quartz is used in electronics and glass-making, but dyed specimens are for ornamental use only.

Geological facts

While quartz is the most common mineral on Earth, deep cobalt blue quartz does not occur naturally in this form. These are often sold as 'Blue Aura' or 'Blue Quartz,' but the intense color concentrated in cracks is a definitive sign of artificial enhancement.

Field identification & locations

Identify in the field by looking for unnatural color concentration in the crystal crevices. Natural blue quartz is rare and usually has a duller, grayish-blue hue caused by inclusions of other minerals like crocidolite or tourmaline.

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