
Raw Blue-Green Jasper or Chert Nodules
This pair of mineral specimens consists of two small, hand-held raw stones exhibiting a distinct waxy to vitreous luster, characteristic of microcrystalline quartz varieties like jasper or chert. The stones feature a complex color palette shifting from a deep, muted slate blue and charcoal gray to vibrant patches of seafoam green and teal. Their physical form is irregular and water-worn, suggesting they may have been collected from a riverbed or coastal environment. Surfaces show natural conchoidal fracturing with sharp edges in some areas, contrasted by smooth, rounded 'rind' sections. Notable features include dark brownish-black veining and light tan inclusions that create a mottled, brecciated appearance. The larger stone measures approximately 1.5 to 2 inches in length. There are visible surface abrasions and internal fracture lines typical of raw geological samples. While no man-made markings are present, the high density of color and the translucency of the lighter green sections indicate a high-quality semi-precious material suitable for lapidary work or specimen collecting. The age is geological, stretching back millions of years, and the craftsmanship is purely natural, shaped by erosion and tectonic pressure.
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Estimated Value
$45 - $65
Basic Information
Category
Minerals and Gemstones
Appraised On
February 25, 2026
Estimated Value
$45 - $65
Item Description
This pair of mineral specimens consists of two small, hand-held raw stones exhibiting a distinct waxy to vitreous luster, characteristic of microcrystalline quartz varieties like jasper or chert. The stones feature a complex color palette shifting from a deep, muted slate blue and charcoal gray to vibrant patches of seafoam green and teal. Their physical form is irregular and water-worn, suggesting they may have been collected from a riverbed or coastal environment. Surfaces show natural conchoidal fracturing with sharp edges in some areas, contrasted by smooth, rounded 'rind' sections. Notable features include dark brownish-black veining and light tan inclusions that create a mottled, brecciated appearance. The larger stone measures approximately 1.5 to 2 inches in length. There are visible surface abrasions and internal fracture lines typical of raw geological samples. While no man-made markings are present, the high density of color and the translucency of the lighter green sections indicate a high-quality semi-precious material suitable for lapidary work or specimen collecting. The age is geological, stretching back millions of years, and the craftsmanship is purely natural, shaped by erosion and tectonic pressure.
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