sedimentary

Poppy Jasper

Jasper (variety of Chalcedony), SiO2 (Silicon Dioxide)

Hardness: 6.5-7.0 (Mohs scale); Color: Red base with circular 'poppy' or orbicular inclusions of white, yellow, or black; Luster: Vitreous to dull; Crystal structure: Trigonal (microcrystalline); Cleavage: None, exhibits conchoidal fracture.

Hardness: 6
Luster: Vitreous to dull

Identified April 1, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed through the accumulation of fine volcanic ash or silica-rich sediments. The orbicular 'poppy' patterns are typically formed by radial growth of needle-like crystals around a nucleus within the silica gel during cooling or diagenesis.

Uses & applications

Primarily used as a semi-precious gemstone for jewelry, lapidary art, cabochons, and decorative ornamental carvings. Highly valued by rock collectors for its unique patterns.

Geological facts

The most famous variety is Morgan Hill Poppy Jasper, found in California. It is a rare orbicular jasper that some people believe has grounding metaphysical properties. Red jasper's color is usually caused by iron inclusions.

Field identification & locations

Identify by its distinctive red background with small, orb-like 'flower' patterns. It is found in volcanic regions or alluvial deposits; Morgan Hill, California is a primary source. Collectors should look for high contrast between the 'poppies' and the matrix.

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