igneous
Tumbled feldspar-rich stone, likely granite or granitic pegmatite
Quartz–feldspar aggregate; likely alkali feldspar and plagioclase with minor quartz, possibly altered
AI-generated identification · may be incorrectCream-white to pale pink, opaque, with a dull-to-waxy polished luster and granular texture; individual crystals are poorly resolved. Estimated hardness 6–7 Mohs and specific gravity about 2.6–2.7; cleavage is obscured by tumbling.
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Physical properties
Cream-white to pale pink, opaque, with a dull-to-waxy polished luster and granular texture; individual crystals are poorly resolved. Estimated hardness 6–7 Mohs and specific gravity about 2.6–2.7; cleavage is obscured by tumbling.
Formation & geological history
Likely formed by slow crystallization of silica-rich magma millions to billions of years ago, producing interlocking feldspar and quartz crystals; surface rounding is human tumbling. Exact identification and age require a fresh surface or testing.
Uses & applications
Used as a decorative tumbled stone, craft material, aggregate, and sometimes ornamental stone; it has little gemstone value unless unusually patterned or attractive.
Geological facts
The pale pink or cream coloration commonly comes from potassium feldspar, while cloudy white areas may be plagioclase or quartz. The photograph does not show diagnostic crystal faces, so precise identification is uncertain.
Field identification & locations
Look for visible interlocking grains, feldspar cleavage, quartz’s glassy appearance, and no reaction to dilute acid; a steel file should generally leave little or no scratch. Common sources include granite terrains worldwide, especially North America, Brazil, India, and Scandinavia.
