121

Jasper

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17g 10h 35m 22s
13/11/2026 16:00:00
Estimate
€ 50,00 / 100,00
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Description

Jasper

Cm 4X3X6
SiO2 (microcrystalline
quartz/chalcedony) — opaque microcrystalline structure
More information
Found worldwide, with
notable varieties from Madagascar, Egypt, the United States, and
Italy , this stone is colored by iron oxide, clay, or organic impurities,
giving it a wide color range (red, yellow , green, brown). It forms
through silicification of fine sediments or volcanic ash. Hardness 6.5–7
Mohs, density 2.6 g/cm³.
Widely used in jewelry ,
carving, and ornamental objects since antiquity (seals, cameos);
highly valued by collectors for its natural patterns (e.g.
“landscape” jasper); also used in crystal healing.
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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