Common Rock Types Illustrated - Sandstone, Obsidian, Basalt, and Pumice #176588 (License: Personal Use)

The image displays four stylized rock specimens against contrasting backgrounds: a layered reddish-brown sandstone suggesting sedimentary origin; a black rock with gray concentric bands resembling banded obsidian or metamorphic gneiss; a jagged black rock evoking basalt or coal; and a light gray, highly vesicular rock characteristic of pumice formed in explosive volcanic eruptions.

Used in educational geology content, museum exhibits, or science curriculum pages to help students visually distinguish rock classifications by texture, color, and structure. Matches user intent to identify or compare common rock types quickly.