AI Appraisal Estimate

This is a hand-sized specimen of rough, natural nephrite jade. The stone exhibits a deep, spinach-green to forest-green color characteristic of high-quality nephrite deposits found in regions such as British Columbia or Wyoming. Its physical construction is dense and fibrous, shown here with a moist surface that highlights its potential luster and waxy texture once polished. The stone features several internal fracture lines and external pitting, including a prominent central crevice that may impact its lapidary utility. Traces of a lighter, brownish-white 'rind' or oxidation layer are visible on the upper edges, typical of raw river-worn or weathered boulders. Measuring approximately 2 to 3 inches in length, the piece displays a sub-vitreous gloss and translucency at the thinner edges when backlit. There are no artificial markings, signatures, or manufacturing details as this is a raw mineral specimen. Its condition is graded as 'rough,' with visible impact marks and natural occlusions that are standard for raw geological finds. The craftsmanship is entirely natural, shaped by environmental erosion over thousands of years.

Based on my visual examination of this rough nephrite jade specimen, the piece exhibits the classic spinach-green saturation and fibrous interlocking structure associated with quality deposits in British Columbia or the Western United States. Measuring 2 to 3 inches, the specimen shows a desirable sub-vitreous luster and minor translucency; however, the presence of significant internal fracture lines and a deep central crevice reduces its yield for fine lapidary work. The market for rough jade of this size is currently driven by artisanal carvers and mineral collectors, where value is determined by weight, color consistency, and 'clean' areas free of inclusions. Similar 'river-worn' specimens of this size and grade typically trade at the retail level between $15 and $30 per pound; this specific piece is valued toward the higher end due to its saturated color. Limitations: While the color and rind appear consistent with natural nephrite, a definitive identification cannot be made through imagery alone. Modern polymer treatments and high-quality glass or serpentine imitations can mimic these visuals. To provide a fully authenticated valuation, I would require an in-person examination to conduct a Specific Gravity test (approx. 2.90–3.03) and a Mohs hardness test (6.0–6.5). Professional gemological testing, such as Raman spectroscopy, would be needed to confirm the absence of dye or resin impregnation.