Raw Blue-Green Jasper or Chert Nodules
Minerals and Gemstones

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.

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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