sedimentary
Heart-shaped River Pebble (Chert/Quartzite)
Cryptocrystalline Quartz (SiO2) / Chert Pebble
Hardness: 6.5 - 7 on Mohs scale. Color: Tan, beige, light brown. Luster: Waxy to dull matte finish. Structure: Microcrystalline aggregate. Cleavage: None (conchoidal fracture). Specific Gravity: 2.6 - 2.65.
- Hardness
- 6
- Color
- Tan, beige, light brown
- Luster
- Waxy to dull matte finish
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Physical properties
Hardness: 6.5 - 7 on Mohs scale. Color: Tan, beige, light brown. Luster: Waxy to dull matte finish. Structure: Microcrystalline aggregate. Cleavage: None (conchoidal fracture). Specific Gravity: 2.6 - 2.65.
Formation & geological history
Formed through the natural erosion and mechanical weathering of sedimentary chert or fine-grained quartzite deposits. The heart shape and smooth, rounded surfaces are created by long-term tumbling in riverbeds, stream flows, or ocean waves.
Uses & applications
Primarily collected as novelty stones, pocket worry stones, home decor, landscaping pebbles, or sentiment gifts due to its natural heart shape.
Geological facts
Naturally heart-shaped rocks, often called 'love stones', are formed entirely by random hydraulic action and abrasion over years or centuries. Waterborne sediment acts as natural sandpaper to round off sharp edges.
Field identification & locations
Identify in the field by its smooth, water-worn texture and natural, heart-like triangular heart shape. Common along gravel bars, riverbanks, and beaches worldwide. Collectors value these for their unique, naturally occurring sentimental shapes.
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