Vintage Emerald-Colored Glass or Resin Pendant

This item is a small, rectangular pendant featuring a vibrant, emerald-green translucent centerpiece. The central stone appears to be either faceted glass or a molded resin, set within a simple, dark-toned metal frame that exhibits significant age-related patina or oxidation, suggesting it may be silver-toned base metal or perhaps tarnished sterling silver. The pendant measures approximately 1 to 1.5 centimeters in length. It is held by a four-prong setting visible at the corners. Attached to the top is a small jump ring connected to a larger, triangular bail intended for a chain. The bail shows a matte, darkened finish consistent with mid-20th-century costume jewelry. There are no immediate maker's marks visible in the photograph, though the construction is typical of mass-produced vintage accessories from the 1950s to 1970s. The condition shows light surface wear on the 'stone' and heavy tarnishing on the metallic components, adding to its vintage character. The green insert has an internal texture that catches the light, giving it a depth similar to natural beryl, though its regularity suggests a synthetic origin. The craftsmanship is functional rather than high-end, indicative of everyday wear jewelry from its era.

I have examined the digital representation of this emerald-colored rectangular pendant. Based on the visible characteristics, this piece is categorized as vintage costume jewelry, likely dating from the 1950s to the 1970s. The 'stone' exhibits a high degree of transparency and internal regularity with minor surface abrasions, which suggests it is faceted glass or a molded resin rather than a natural emerald. The setting shows significant oxidation and a dark patina typical of silver-toned base metal; the absence of visible '925' or 'sterling' hallmarks, combined with the functional prong-work, reinforces its status as a mass-produced accessory. The market for mid-century costume jewelry is currently saturated with similar non-designer pieces. Comparables sold in online vintage marketplaces typically range from $10 to $30 depending on the buyer's interest in the specific aesthetic rather than intrinsic material value. The item's value is primarily decorative, as there is no significant rarity or designer provenance to drive collector demand. Limitation Note: This appraisal is based strictly on visual inspection of the provided image. A physical examination is required to verify the metal composition via acid testing or XRF analysis. Additionally, a refractometer test would be necessary to definitively distinguish the green insert between glass, resin, or synthetic spinel. Without physical access or provenance documentation, internal flaws cannot be examined under magnification to rule out lab-grown mineral alternatives, though current evidence strongly suggests a synthetic costume origin.