Obsidian Rock Specimen - Natural Volcanic Glass with Striking Banding #194259 (License: Personal Use)

This high-quality obsidian specimen displays vivid white streaks and ribbons embedded within its deep black, glassy matrix-evidence of mineral inclusions and flow structures from its volcanic origin. The smooth, slightly curved surface highlights its conchoidal fracture pattern and reflective sheen, characteristic of naturally formed volcanic glass. Its irregular shape suggests it was hand-collected and minimally processed to preserve geological authenticity.

Used on mineralogy websites, museum digital collections, educational science pages, or e-commerce sites selling geological specimens; targets users searching for “obsidian rock,” “volcanic glass samples,” or “mineral collecting.”