Vintage Faceted Glass or Crystal Jewelry Stones in Display Cases

This lot consists of three individual faceted round stones, likely glass or crystal, each presented in a small, black-and-transparent plastic hinged display case with a cream-colored foam insert. The stones feature a brilliant round cut with visible facets designed to maximize light reflection. The set includes a vibrant lime-green peridot-style stone, a deep pink ruby-style stone, and a dark navy or teal sapphire-style stone. The pink stone is notably distinguished by a gold-tone serrated bezel or decorative setting rimming the base, whereas the green and blue stones appear to be loose or minimally set. Based on the plastic casing and the saturation of the colors, these appear to be vintage costume jewelry components or loose rhinestones, possibly mid-to-late 20th century. The stones show high clarity without visible internal inclusions, suggesting they are synthetic or manufactured glass. The plastic display boxes show some minor surface scuffing and cloudiness consistent with age. There are no obvious maker's marks visible through the casing, but the uniformity in presentation suggests they were sold as a set or for a specific craft purpose. The craftsmanship is typical of commercial-grade faceted glass, intended for mountings in brooches, rings, or earrings.

I have conducted a visual examination of this lot comprising three faceted stones in gem display cases. The stones exhibit characteristics consistent with high-quality vintage glass or paste, rather than natural gemstones. The lime-green and navy stones appear to be loose, while the deep pink stone features a gold-tone serrated bezel setting, common in mid-20th-century costume jewelry components. The clarity and lack of natural inclusions, combined with the saturation of color, point toward synthetic or manufactured origins typical of the 1950s–1970s. The condition of the stones appears excellent with no visible facet wear or 'flea bites.' The presentation boxes show light scuffing, suggesting they have been preserved in a collection for some time. In the current secondary market, vintage faceted glass components are consistently sought after by artisan jewelers and collectors of 'New Old Stock' (NOS) findings. Comparables for individual vintage glass faceted stones of this size and clarity typically range from $15 to $25 per unit when presented in original or vintage-appropriate housing. Limitations: This appraisal is based solely on visual analysis from photographs. Without physical inspection, I cannot perform a refractive index test, specific gravity measurement, or microscopic examination to definitively rule out synthetic corundum or spinel. Furthermore, I cannot verify the metal content of the pink stone’s bezel; while it appears to be costume-grade gold-tone metal, a professional acid test would be required to verify if it is gold-filled or plated. For definitive authentication, a gemological report or in-person testing with a refractometer would be necessary.