sedimentary
Heart-shaped Jasper / Chert Pebble
Microcrystalline Quartz (SiO2)
Hardness of 7 on the Mohs scale, earthy to vitreous luster, conchoidal fracture, opaque to translucent, brown and beige coloration with natural weathering, specific gravity of 2.60 to 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, earthy to vitreous luster, conchoidal fracture, opaque to translucent, brown and beige coloration with natural weathering, specific gravity of 2.60 to 2.65.
Formation & geological history
Formed through the diagenesis and precipitation of silica-rich fluids or organic remains in marine environments, subsequently shaped into a heart-like morphology by natural water tumbling and erosion in a river or beach environment.
Uses & applications
Commonly collected as a novelty or decorative display piece, used in lapidary arts, or kept as a sentimental pocket stone.
Geological facts
Naturally occurring heart-shaped stones are formed entirely by random mechanical weathering and differential erosion, making them popular finds for beachcombers and rockhounds.
Field identification & locations
Found worldwide in riverbeds, glacial tills, and gravel deposits. Identified by its high hardness (scratches glass), waxy luster on fractured surfaces, and smooth water-worn contours.
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