Gold-toned cage pendant containing dark carbonaceous material

This item is a necklace featuring a small, ovoid cage pendant suspended from a fine curb or cable link chain. The pendant is constructed of several curved metallic ribs in a gold-toned finish, which enclose a rough-textured, black, irregular fragment that appears to be carbonaceous material, such as coal. The metal possesses a bright, polished luster consistent with gold-plated or gold-filled jewelry; however, no hallmarks or maker's marks are visible in the image to verify metal purity or manufacturer. The dark fragment remains trapped within the cage, showing a matte, porous surface. The owner identifies the enclosed material as coal from the RMS Titanic. While this provenance is consistent with certain souvenir items produced for museum exhibitions or historical societies, there are no visible certificates or engravings to verify the origin or historical significance of the material within this specific setting. Without physical chemical analysis or accompanying documentation, the attribution to the 1912 wreckage remains unverified and hypothetical. The necklace appears to be in good condition with minor surface wear visible on the metallic links and pendant ribs.

I have examined the submitted image of the ovoid cage pendant and chain. Based on what I can see, the item appears to be a gold-toned costume jewelry piece containing a fragment of dark, carbonaceous material. The owner identifies this material as coal recovered from the RMS Titanic. While such items were produced as souvenirs for various exhibitions, I cannot verify the historical origin or the specific provenance of this piece from a photograph alone. The metal lacks visible hallmarks; therefore, I must assume it is gold-plated or a base metal alloy rather than solid gold. My appraisal value of $25 to $75 is a hypothesis based on the assumption that the material is indeed Titanic coal, which carries a niche historical appeal. The value reflects typical market demand for uncertified maritime memorabilia. If the provenance could be supported by a certificate of authenticity from a recognized recovery entity, the value could potentially rise into the $150 to $300 range. Conversely, if the material is generic coal or a replica, the value would likely drop to a decorative or 'in the style of' value of $5 to $15. To confirm the significance of this item, a physical inspection by a specialist in maritime artifacts and a review of the original purchase documentation or certificates would be required. Scientific testing of the coal fragment could also provide data consistent with the anthracite or bituminous coal known to be carried by the Titanic, though this would not definitively prove its origin without a chain of custody.