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Large quartz crystal

Time left
16g 13h 42m 34s
13/11/2026 14:54:00
Estimate
€ 200,00 / 300,00
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Description

Large quartz crystal

W. 15,5 cm
SiO₂ — trigonal system
More information
Found worldwide, with museum specimens from
Brazil, Madagascar, Arkansas (USA), and the Alps, it is one of the most
common minerals in the Earth’s crust. It crystallizes in hydrothermal,
pegmatitic, or metamorphic environments, across a wide range of geological ages.
Hexagonal prismatic habit terminated by pyramids, hardness 7 on the Mohs scale,
density 2.65 g/cm³, piezoelectric.
Used in jewelry, decorative objects, and scientific instruments
(quartz oscillators); an iconic specimen for both novice and
expert collectors; used in interior design.
Time auction 1251

Historia Naturalis

mon 26 October - fri 13 November 2026
The description sheets do not always indicate the state of conservation of the goods, we invite you to always request the condition report before making your offers
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