Oval Black Gemstone Sterling Silver Pendant Necklace

This jewelry piece consists of a sterling silver snake chain holding an oval-shaped pendant. Based on the provided context, the metal is .925 sterling silver, which is indicated by the bright, lustrous white-metal finish of both the chain and the pendant setting. The pendant features a large, multifaceted oval-cut gemstone, appearing black or very dark blue (potentially onyx, spinel, or sapphire), secured in a four-prong setting. Surrounding the center stone is an ornate halo border with beaded or milgrain detailing, a hallmark of vintage-inspired or Art Deco Revival styles. The bail of the pendant is elongated and also features textured detailing that matches the halo. The snake chain is a smooth, round, flexible link style that provides a modern contrast to the more traditional pendant design. The craftsmanship appears to be of commercial high quality with clean symmetry in the faceting and setting. Condition appears excellent with no visible tarnishing, chips to the stone, or kinks in the chain, suggesting either a contemporary manufacture or a well-maintained piece from the late 20th to early 21st century.

I have conducted a visual appraisal of this sterling silver pendant necklace. The hallmark '.925' confirms the metal composition as sterling silver, exhibiting a high-luster finish characteristic of rhodium plating which helps prevent oxidation. The primary gemstone is a large, oval-cut multifaceted stone; while its deep black hue is consistent with high-quality Black Onyx or Spinel, its exact mineral identity cannot be confirmed without refractive index testing. The setting features a vintage-inspired halo with milgrain texture, showing excellent symmetry and secure prong placement, indicating high-quality commercial manufacturing. The accompanying sterling silver snake chain is in excellent condition with no visible kinks. This piece falls into the 'Fine Bridge Jewelry' market category. Value is determined based on current silver spot prices and comparable retail sales of designer-style sterling silver gemstone pendants. While the design is elegant, silver jewelry produced in the late 20th to early 21st century is generally mass-market rather than rare, limiting its secondary market appreciation. Limitations: This valuation is based solely on digital imagery. For a definitive certificate of value, a physical inspection is required to verify the stone's authenticity via thermal conductivity or spectroscopic analysis, as a synthetic glass or doublet could mimic this appearance. A physical check of the hallmark's authenticity and an inspection for hidden repairs or structural thinning would also be necessary to finalize this assessment.