Faceted Black Spinel or Onyx Beaded Necklace with Silver Bolt Ring Clasp

This item is a contemporary-style necklace featuring a continuous arrangement of small, faceted black beads, likely black spinel or high-grade onyx. The beads are uniform in size, approximately 2mm to 3mm in diameter, and exhibit a high vitreous luster due to their multi-faceted surfaces which catch and reflect light. The necklace is strung on a durable, dark cord or wire, terminating in a silver-toned metal closure system. The hardware consists of a classic spring-action 'bolt ring' or 'spring ring' clasp and a flat, rectangular stamped metal tag (hallmark plate). The overall length appears to be approximately 16 to 18 inches, consistent with a choker or princess length fit. The condition is excellent, showing no visible signs of bead chipping, abrasion, or thread fraying. The metal components show a bright, polished finish with minimal oxidation, suggesting it is a relatively modern piece. The precision of the faceting indicates high-quality lapidary work, often associated with modern minimalist jewelry designs. No specific maker's signature is legible from the distance, but the presence of the tag suggests a professional manufacturing origin.

Based on my visual examination of the faceted black beaded necklace, I have identified the piece as a contemporary minimalist design likely featuring black spinel or premium onyx. The beads, measuring approximately 2-3mm, exhibit exceptional brilliance and uniform faceting, which is characteristic of high-quality spinel. The metallic components—a bolt ring clasp and hallmark tag—appear to be sterling silver, though a definitive '925' mark is not clearly legible from the provided imagery. The condition is excellent, with no evidence of bead degradation or cord fraying. In the current retail market, these necklaces are highly sought after for 'neck stacks' and minimalist wear. Spinel is generally valued higher than onyx due to its superior refractive index and harder surface. While these materials are not 'rare' in the traditional sense, the precision of the micro-faceting indicates professional lapidary work rather than mass-market craft assembly. Value is primarily driven by the material identification and the metal purity. A major limitation of this digital appraisal is the inability to perform a streak test or refractive index measurement to definitively distinguish between spinel and glass or onyx. Furthermore, I cannot verify the silver content without a professional acid test or XRF analysis. To provide a definitive authentication, an in-person inspection would be required to examine the hallmark under magnification and verify the gemstone's crystal structure. Provenance or a original receipt from a known boutique would also solidify the upper end of the valuation range.