Clinozoisite Crystal

$157.31
Chemical FormulaCa₂Al₃(SiO₄)₃(OH)
Crystal SystemMonoclinic
Mohs Hardness6.5
Specific Gravity3.21–3.38
LusterVitreous
TransparencyTransparent

Alpine clinozoisite from classic Austrian localities shows olive-green to yellowish-green crystals of exceptional transparency and form. The mineral is an epidote-group aluminum ca…

20 in stock

SKU: TC-MIN-0050
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Description

What looks like stone is, on closer inspection, frozen time. Alpine clinozoisite from classic Austrian localities shows olive-green to yellowish-green crystals of exceptional transparency and form. The mineral is an epidote-group aluminum calcium silicate that forms in metamorphic terrains. Austrian specimens are among the reference standards in any mineral collection.

This specimen originates from Knappenwand, Untersulzbachtal, Austria, one of the world’s most significant localities for this type of material. Collectors and scientists have drawn from this region for generations, and for good reason: the combination of geological conditions here produces specimens of exceptional quality and clarity.

Every specimen is unique. Photographs approximate the visual experience, but the real thing — its weight, its luster under a raking light, the way it catches the corner of your eye — can only be experienced directly.

Formation

This specimen formed through geological processes operating over timescales that dwarf human history. The specific combination of chemistry, temperature, pressure, and time at this locality produced material of exceptional quality that makes it a valued addition to any serious collection.

Locality

Clinozoisite Crystal from Knappenwand, Untersulzbachtal, Austria. This locality is known for producing specimens of exceptional quality.

Collector Notes

The luster is maximized by low-angle raking light — try a single spotlight.