AI Appraisal Estimate

This specimen is a palm-sized, unpolished natural rock exhibiting characteristics common to the serpentine group or nephrite jade. The stone measures approximately 2 to 3 inches in length and features a waxy to greasy luster on its surface. Its primary coloration is a deep sage to forest green, punctuated by intricate, web-like white to light-grey veins and inclusions that suggest various mineral interactions during its geological formation. The physical structure is irregular and water-worn, showing smooth, rounded edges typical of river-bed or alluvial find, though the surface retains a matte, non-reflective finish indicating it has not been mechanically tumbled or polished. Notable features include a slightly translucent quality in thinner sections, particularly along the edges, and a dense, compact composition. There are visible surface scratches and minor pitting consistent with natural environmental erosion. The absence of specific maker's marks or signatures is expected for a raw geological specimen. This item represents a natural work of geological art, valued for its potential for lapidary work or as a tactile collector's specimen of metamorphic rock. Identification of the specific mineral variety would require further testing for hardness and specific gravity, but its visual properties strongly align with minerals found in serpentinite-heavy geological regions.

I have conducted a visual examination of this specimen, which presents as a significant example of raw, unpolished metamorphic material, likely Serpentine or Nephrite Jade. The item displays a desirable deep sage to forest green coloration and a characteristic waxy luster. Its water-worn, alluvial texture suggests a natural river-bed origin, which is highly sought after by collectors of tactile, unpolished specimens. The condition is consistent with natural weathering; while surface pitting and scratches are present, they are viewed as authentic geological features rather than damage. The current market for 'rough' lapidary material remains steady, though the price is heavily influenced by the lack of definitive mineral identification. If confirmed as high-quality Nephrite Jade through a specific gravity test (reaching 2.90–3.03) or a Mohs hardness test (6.0–6.5), the value could elevate toward the higher end of the range or beyond, particularly for use in carvings. If the specimen is Serpentinite (softer, Mohs 3–6), it is less rare and primarily valued as an aesthetic or 'worry' stone. Comparables for palm-sized, unpolished alluvial greenstones generally trade in the sub-$100 range unless they exhibit high translucency or exceptional provenance. Limitations: My assessment is based solely on visual characteristics. I cannot definitively distinguish between Serpentine and Nephrite without a destructive scratch test or laboratory measurement of density. Furthermore, the presence of internal fractures—which could significantly decrease value for lapidary use—cannot be fully ascertained without 'candling' the stone with high-intensity light. For a certified valuation, I recommend a professional specific gravity assessment.