mineral

Green Druzy Quartz (Prasiolite)

Silicon Dioxide (SiO2) with inclusions (typically Chlorite or Actinolite)

Hardness: 7 (Mohs scale); Color: Pale to medium forest green; Luster: Vitreous/glassy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

Hardness: 7 (Mohs scale)
Color: Pale to medium forest green
Luster: Vitreous/glassy

Identified March 13, 2026More mineral →

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Physical properties

Hardness: 7 (Mohs scale); Color: Pale to medium forest green; Luster: Vitreous/glassy; Crystal Structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

Formation & geological history

Formed through hydrothermal processes where silica-rich fluids precipitate into cavities or vugs in host rock, often during the final stages of magmatic cooling or metamorphic shifts. The 'druzy' effect refers to the coating of tiny crystals over a host stone.

Uses & applications

Predominantly used in jewelry (pendants, rings), as a decorative mantle piece, and in metaphysical rock collecting. Industrial uses of basic quartz include electronics and glassmaking, though druzy specimens specifically are ornamental.

Geological facts

Natural green quartz is quite rare in nature; most commercial prasiolite is created by heat-treating amethyst. However, specimens like this with a druzy surface often get their color from mineral inclusions like chlorite trapped beneath or within the tiny crystal facets.

Field identification & locations

Identify by its 'sugar-like' sparkling surface and high hardness (it will scratch glass). Commonly found in volcanic geode regions of Brazil, Uruguay, and India. Look for the distinct green hue that doesn't wash off, unlike dyed fakes.

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