
Large Raw Yellow Quartz or Agate River Stone
This item is a large, natural specimen of raw mineral, likely a variety of yellow-brown quartz or chalcedony. The stone is roughly the size of a human hand or larger, exhibiting a sub-angular to rounded shape consistent with alluvial transport, suggesting it may be a river rock or glacial erratic. Its color palette is dominated by ochre, honey-yellow, and earthy tan tones, with translucent patches that reveal an internal microcrystalline or cryptocrystalline structure. The surface is heavily textured with natural fractures, pits, and rinds of oxidation. Significant deep veining and internal crazing are visible, which may indicate structural fragility or natural stress fractures from geological processes. No man-made markings, signatures, or lapidary work are present, identifying this as a raw geological specimen. The waxy luster in certain spots suggests a high silica content, typical of agate or quartzite. Its condition is naturally weathered with significant iron staining and mineral deposits across the exterior. The craftsmanship is purely environmental, shaped by water and time rather than human intervention.
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Estimated Value
$45.00 - $75.00
Basic Information
Category
Geological Specimens / Natural Minerals
Appraised On
February 6, 2026
Estimated Value
$45.00 - $75.00
Item Description
This item is a large, natural specimen of raw mineral, likely a variety of yellow-brown quartz or chalcedony. The stone is roughly the size of a human hand or larger, exhibiting a sub-angular to rounded shape consistent with alluvial transport, suggesting it may be a river rock or glacial erratic. Its color palette is dominated by ochre, honey-yellow, and earthy tan tones, with translucent patches that reveal an internal microcrystalline or cryptocrystalline structure. The surface is heavily textured with natural fractures, pits, and rinds of oxidation. Significant deep veining and internal crazing are visible, which may indicate structural fragility or natural stress fractures from geological processes. No man-made markings, signatures, or lapidary work are present, identifying this as a raw geological specimen. The waxy luster in certain spots suggests a high silica content, typical of agate or quartzite. Its condition is naturally weathered with significant iron staining and mineral deposits across the exterior. The craftsmanship is purely environmental, shaped by water and time rather than human intervention.
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