Large glossy black rough stone specimen with sharp conchoidal fracture surfaces and a natural irregular form. The material appears visually consistent with black obsidian volcanic glass, though exact mineral identification is not laboratory confirmed. A striking raw mineral display piece for crystal collections, Gothic décor, or natural stone displays.

• Black obsidian-style stone
• Rough volcanic glass
• Natural mineral specimen
• Glossy black finish
• Crystal display décor

Measurements shown in photos. Pre-owned condition.