Obsidian

The specimen appears as a dark, opaque black rough piece with a glassy to sub-vitreous sheen on several broken faces. Its irregular fractured surfaces and curved break patterns are consistent with volcanic glass rather than a crystalline gem cut for jewelry. Small reddish-brown surface seams or mineral staining are visible along one area, adding visual contrast but not necessarily increasing gem value. The piece is unpolished and uneven, best described as a mineral specimen or lapidary rough rather than a finished gemstone.