Vintage-style shell cameo brooch and ring set

This set consists of two pieces of jewelry featuring carved oval cameos, stylistically consistent with mid-20th-century costume jewelry inspired by Victorian-era designs. The brooch features a bezel-set carved shell depicting a woman's profile facing right, enclosed in an ornate gold-tone metal frame with beaded edges and scrolling decorative flourishes. The ring features a similar, smaller carved shell profile facing left, set into a tall, open-work filigree gallery of silver- or gold-toned metal that appears to have significant tarnishing or adhesive residue around the base of the cameo. The carvings appear to be made from natural shell, given the characteristic color layering (peachy-brown background with cream-colored relief), although synthetic molded materials cannot be ruled out from a photo. There are no visible maker's marks or metal fineness stamps (such as '925' or '14K') legible in the image; therefore, the metal composition is treated as unverified costume-grade alloy. Condition issues include visible surface grime, significant oxidation or wear to the plating on the ring's shank and gallery, and possible adhesive discoloration on the ring cameo's surface. These items are attributed as vintage costume pieces based on their construction and the typical appearance of 20th-century mass-produced cameo settings, pending in-person testing for material composition.

Based on my visual examination of the images provided, I have assessed this two-piece cameo set consisting of a brooch and a ring. Based on what I can see, these pieces appear to be mid-20th-century costume jewelry created in the Victorian style. I cannot verify the metal composition or the natural origin of the shell from a photo alone; however, the lack of visible hallmarks suggests these are likely composed of non-precious base metal alloys. The value estimate of $40-$75 assumes these are vintage costume pieces with natural shell or high-quality molded resin. The condition significantly impacts this valuation, as I observe what appears to be adhesive residue, surface grime, and plating wear on the ring's gallery. Market demand for unattributed vintage costume cameos remains stable but modest, with collectors typically seeking pieces in pristine condition or those bearing marks consistent with known makers like Trifari or WRE. If these items were found to be 14k gold or higher-grade silver upon physical inspection, the value would increase substantially based on intrinsic metal weight and craftsmanship. Conversely, if the cameos are determined to be modern plastic reproductions, the value would likely fall below $20. To confirm these hypotheses, an in-person examination is required to conduct acid testing for metal fineness and a microscopic inspection of the carving to differentiate between natural shell and molded synthetics. Professional cleaning and verification of the setting's integrity would also be necessary to reach a more precise valuation.