
Raw Mineral Specimen (Possible Serpentinite or Mafic Rock)
This item is a raw, unpolished mineral specimen characterized by an irregular, blocky shape with multiple jagged fracture planes. The primary coloration is a deep, mottled olive green to charcoal grey, interspersed with lighter grey and tan weathered surfaces along the exterior edges. Its physical composition appears dense and fine-grained, suggestive of a metamorphic or igneous origin. The surface exhibits a dull to sub-vitreous luster, with some areas showing a slightly waxy or greasy texture common in serpentinite-group minerals. There are occasional visible crystalline inclusions or metallic flecks that catch the light, though most of the matrix is opaque. The condition is entirely natural and untreated, showing typical 'rough' characteristics including sharp edges, micro-fractures, and some surface dirt accumulation. There are no man-made markings, signatures, or lapidary alterations present. The specimen shows signs of natural weathering on the paler tan sections, which contrast with the darker, fresher interior exposed by more recent breakage. It measures approximately a few inches across, though specific dimensions cannot be verified without a scale. The overall craftsmanship is non-existent as it is a geological sample, but it possesses the high-quality structural integrity sought by amateur geologists and collectors of raw mineral samples.
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Estimated Value
$15.00 - $35.00
Basic Information
Category
Minerals and Natural Curiosities
Appraised On
May 9, 2026
Estimated Value
$15.00 - $35.00
Item Description
This item is a raw, unpolished mineral specimen characterized by an irregular, blocky shape with multiple jagged fracture planes. The primary coloration is a deep, mottled olive green to charcoal grey, interspersed with lighter grey and tan weathered surfaces along the exterior edges. Its physical composition appears dense and fine-grained, suggestive of a metamorphic or igneous origin. The surface exhibits a dull to sub-vitreous luster, with some areas showing a slightly waxy or greasy texture common in serpentinite-group minerals. There are occasional visible crystalline inclusions or metallic flecks that catch the light, though most of the matrix is opaque. The condition is entirely natural and untreated, showing typical 'rough' characteristics including sharp edges, micro-fractures, and some surface dirt accumulation. There are no man-made markings, signatures, or lapidary alterations present. The specimen shows signs of natural weathering on the paler tan sections, which contrast with the darker, fresher interior exposed by more recent breakage. It measures approximately a few inches across, though specific dimensions cannot be verified without a scale. The overall craftsmanship is non-existent as it is a geological sample, but it possesses the high-quality structural integrity sought by amateur geologists and collectors of raw mineral samples.
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