igneous
Tumbled feldspar-rich rock, possibly granite or gneiss
Indeterminate feldspar–quartz rock; exact identification requires testing
AI-generated identification · may be incorrectSmooth, rounded, translucent gray-green body with pale cream patches and a subdued vitreous-to-waxy luster. Visible grains suggest quartz and feldspar; hardness likely around 6–7 Mohs if quartz-bearing, but cannot be confirmed from the image.
Identified More igneous →
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Physical properties
Smooth, rounded, translucent gray-green body with pale cream patches and a subdued vitreous-to-waxy luster. Visible grains suggest quartz and feldspar; hardness likely around 6–7 Mohs if quartz-bearing, but cannot be confirmed from the image.
Formation & geological history
Likely a naturally weathered pebble that has been tumbled or polished. If granite, it crystallized from slowly cooled magma; if gneiss, it was recrystallized under metamorphic heat and pressure; age is unknown.
Uses & applications
Small polished specimens are used for collecting, crafts, and decorative displays; comparable unpolished rock may be used as aggregate or building stone.
Geological facts
The image does not show enough diagnostic detail to distinguish granite, gneiss, or another feldspar-rich stone reliably.
Field identification & locations
Look for interlocking grains, quartz hardness (scratches glass), and any mineral banding; a fresh surface or simple hardness test would improve identification. Such pebbles occur widely in glacial and river deposits.
