17

Big quarz crystal

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17g 15h 6m 54s
13/11/2026 14:16:00
Estimate
€ 50,00 / 100,00
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Description

Big quarz crystal

cm 15X11
SiO2 —trigonal system
More information
Found worldwide, with museum-grade specimens from Brazil, Madagascar , Arkansas
(USA), and the Alps, this is one of the most common minerals of the
Earth’s crust. It crystallizes in hydrothermal, pegmatitic, or
metamorphic environments across a wide range of geological ages.
Hexagonal prismatic habit terminated by pyramidal faces, hardness 7
Mohs, density 2.65 g/cm³, piezoelectric.
A staple of jewelry , decorative objects, and scientific instruments (quartz
oscillators); an iconic piece for beginner and expert collectors alike;
used in interior décor .
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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