mineral

Green Apophyllite on Stilbite

Fluorapophyllite-(K) [(KCa4Si8O20F)·8H2O] and Stilbite [NaCa4(Si27Al9)O72·28H2O]

AI-generated identification · may be incorrect

Hardness: 4.5-5 (Apophyllite) / 3.5-4 (Stilbite); Color: Mint green crystal tips with pale peach/tan base; Luster: Pearly to vitreous; Crystal structure: Tetragonal (prism/pyramid) and Monoclinic (sheaths); Cleavage: Perfect in one direction.

Hardness: 4
Color: Mint green crystal tips with pale peach/tan base
Luster: Pearly to vitreous

Identified March 23, 2026More mineral →

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Physical properties

Formation & geological history

Formed in volcanic basalt cavities (vugs) through secondary hydrothermal deposition of mineral-rich water. Most commercial specimens are from the Deccan Traps in India, dating back approximately 65 million years.

Uses & applications

Predominantly used as display specimens for mineral collectors and in metaphysical practices (crystal healing). Due to low hardness, it is rarely used in jewelry, but is highly sought after for aesthetic home decor.

Geological facts

Green apophyllite is colored by trace amounts of iron or vanadium. It is famous for its 'pearly' luster on base faces and its presence often indicates the final stages of volcanic activity in a region.

Field identification & locations

Identify by the distinctive four-sided square pyramidal crystal terminations and the 'bow-tie' shaped clusters of associated stilbite. Commonly found in Maharashtra, India. Collectors should look for undamaged crystal points and deep green saturation.