AI Appraisal Estimate

This collection consists of nine individual pieces of Tiger's Eye, a metamorphic rock with a silky luster and distinct chatoyancy. The assortment includes various geometric shapes such as ovals, rounds, a marquise, a square, and rectangles. The stones exhibit the classic golden to red-brown color palette, characterized by parallel fibrous bands of crocidolite that have been replaced by silica. The largest oval piece measures approximately 30mm in length, while the smallest round is roughly 10mm. The surfaces are polished to a high vitreous shine, effectively showcasing the 'cat's eye' effect when light reflects off the internal fibers. Most pieces are domed cabochons, though some appear flatter. One marquise-shaped stone features a centrally drilled hole, suggesting it was intended as a bead or focal pendant. The condition is generally excellent with smooth edges and no visible fractures or significant chips, though minor surface scratches and natural inclusions are typical for this material. The craftsmanship demonstrates professional lapidary work, with uniform symmetry across the shaped pieces. These items are likely contemporary, sourced from major deposits in South Africa or Western Australia, and are intended for use in jewelry making or as decorative pocket stones.

I have examined the digital images of this nine-piece collection of Polished Tiger's Eye Cabochons. The specimens exhibit the classic golden-brown to ferruginous-red coloration and strong chatoyancy characteristic of high-quality quartz pseudomorphs after crocidolite. The lapidary work appears professional, featuring consistent doming and a high vitreous luster. The largest 30mm oval serves as a centerpiece, while the smaller rounds and the drilled marquise provide versatility for jewelry application. Condition appears excellent, with no visible conchoidal fracturing or significant surface pits. The chatoyant 'bands' are well-aligned across the horizontal axes of the stones, which maximizes their optical appeal. From a market perspective, Tiger's Eye is a plentiful semi-precious material primarily sourced from the Northern Cape of South Africa. As it is not rare, its value is driven by the quality of the 'eye' effect and the precision of the cut rather than scarcity. Comparables for bulk lapidary lots of this size and finish typically retail in the $5 to $12 per stone range depending on the specific geometry. Note: This appraisal is based solely on visual inspection of the provided images. While the material appears authentic, I cannot definitively rule out synthetic treatments or dyed quartz without performing a refractive index test and specific gravity measurement. A physical inspection would also be required to detect microscopic surface-reaching fissures or stabilization resins. For a certified valuation, a gemological lab report confirming the absence of dye would be necessary, though standard for this specific material type is usually assumed to be natural as shown.