This is an original mid-to-late 20th-century abstract sculpture carved from a single block of translucent white stone, likely alabaster or a high-grade white marble. The piece features a minimalist, biomorphic aesthetic reminiscent of Henry Moore or Barbara Hepworth, depicting a seated or huddled figure with a hollow center, possibly representing a mother and child or a solitary meditative pose. The stone possesses a subtle pinkish-white hue with soft, cloudy inclusions and a polished satin finish that allows light to penetrate the surface. It is mounted on a circular black laminate or wooden tiered base. The base features a small rectangular gold-toned nameplate that appears to read 'JANE CABEEN' or a similar surname, identifying the artist. The construction shows expert subtractive carving techniques with smooth, continuous curves and no visible evidence of mechanical joining. Condition appears excellent with no visible fractures, chips, or pervasive staining, though some light surface dust is present in the crevices. The style suggests a late Modernist approach, emphasizing form and material over realistic detail. The craftsmanship is high-quality, characterized by symmetrical balance and a tactile, fluid surface that enhances the natural beauty of the mineral grain.

I have conducted a visual examination of the abstract stone sculpture attributed to Jane Cabeen. The work, likely carved from high-quality alabaster given its translucency and soft luster, exhibits the hallmarks of late 20th-century Modernism. The subtractive carving is executed with high technical proficiency, demonstrating a sophisticated understanding of negative space and biomorphic form. The condition appears excellent; the stone retains its integrity without visible structural fissures or significant oxidation. The market for mid-century modern stone sculpture remains stable, with increasing interest in female artists of this period. While Jane Cabeen is a documented regional artist, her works appear infrequently at major auctions, placing this piece in a category of relative rarity for collectors of California Modernism. The valuation reflects the superior craftsmanship and the aesthetic appeal of the material. However, this appraisal is based solely on digital images. A physical inspection is required to confirm the stone's mineralogy and to rule out any professional repairs hidden by the satin finish. Full authentication would necessitate a review of provenance documents, such as an original bill of sale or exhibition history. Furthermore, while the nameplate serves as a primary identifier, an in-person search for a direct signature or date inscribed into the stone would significantly bolster the secondary market value. Consequently, this estimate remains a 'fair market value' projection based on current retail trends for comparable modernist carvings.