sedimentary
Veined Quartzite Pebble (Heart-Shaped)
Metamorphosed quartz-rich sandstone with quartz veins
Hardness of 7 on the Mohs scale, grayish-brown color with contrasting white quartz veins, dull to vitreous luster, granular to massive crystal structure, conchoidal fracture, specific gravity around 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, grayish-brown color with contrasting white quartz veins, dull to vitreous luster, granular to massive crystal structure, conchoidal fracture, specific gravity around 2.65.
Formation & geological history
Formed through the metamorphism of quartz sandstone, subsequently exposed to weathering and fluvial or wave action that shaped it into a smooth pebble. Common in ancient sedimentary basins and riverbeds over hundreds of millions of years.
Uses & applications
Used as a decorative garden stone, natural novelty item (due to its heart shape), and collected by enthusiasts.
Geological facts
Rocks shaped naturally like hearts are popular finds for collectors. The white veins are typically hydrothermal quartz that filled fractures in the original rock before it was weathered into a pebble.
Field identification & locations
Easily identified by its high hardness (scratches glass), smooth water-worn surface, and distinct white veining. Found commonly in riverbeds, beaches, and glacial till worldwide, including regions of Ireland and northwestern Europe.
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