25

Diorite

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17g 18h 9m 0s
13/11/2026 14:24:00
Estimate
€ 50,00 / 100,00
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Description

Diorite

Cm 4,5X4,5X7
Plagioclase (andesine) + hornblende/biotite — medium- to coarse-grained intrusive igneous rock
More information
Found worldwide, with historical specimens from Egypt, Italy, and Scandinavia, it has an intermediate composition, with little or no quartz. It forms through the slow crystallization of magma at depth (plutonic), typically within
magmatic arcs. Density: 2.8–3.0 g/cm³; it has a grayish-white, phaneritic-crystalline texture with dark spots.

Historically used for statues and monuments (the “Stele of Hammurabi” in diorite is famous); today used as an ornamental and building stone due to its strength; prized by collectors of plutonic rocks.
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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