sedimentary
Poppy Jasper
Silicon Dioxide (SiO2) with Hematite and Iron Oxide inclusions
Hardness: 6.5-7 (Mohs scale), Color: Red with yellow or orange orbicular (poppy-like) patterns, Luster: Vitreous to dull (polished high gloss in beads), Crystal Structure: Microcrystalline/Trigonal, Specific Gravity: 2.6-2.9
- Hardness
- 6
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Physical properties
Hardness: 6.5-7 (Mohs scale), Color: Red with yellow or orange orbicular (poppy-like) patterns, Luster: Vitreous to dull (polished high gloss in beads), Crystal Structure: Microcrystalline/Trigonal, Specific Gravity: 2.6-2.9
Formation & geological history
Formed from silica-rich fluids deposited in cracks or cavities, often associated with volcanic activity or seafloor hydrothermal vents during the Cretaceous period.
Uses & applications
Primarily used in jewelry, as cabochons or beads, for lapidary arts, and by mineral collectors for its unique aesthetic patterns.
Geological facts
The most famous variety is Morgan Hill Poppy Jasper from California, which is often considered a rare and highly collectable variety of orbicular jasper.
Field identification & locations
Identify by the presence of red matrix with small yellow/orange 'poppies' or circular splotches. Common in Morgan Hill, California, and various sites globally. Highly durable for jewelry wear.
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