Pumice stone - Stock Image - E417/0281 - Science Photo Library

Pumice stone. This soft abrasive igneous rock originated as part of a pyroclastic flow from the 1883 eruption of Krakatoa (Krakatau). MICHAEL CLUTSON/SCIENCE PHOTO LIBRARY

Pumice #4 by Photo Researchers, Inc.

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Pumice stone - Stock Image - E417/0281 - Science Photo Library

Pumice Images – Browse 133,019 Stock Photos, Vectors, and Video

Pumice - Stock Image - E417/0255 - Science Photo Library

22,835 Pumice Images, Stock Photos, 3D objects, & Vectors

22,835 Pumice Images, Stock Photos, 3D objects, & Vectors

22,835 Pumice Images, Stock Photos, 3D objects, & Vectors

Pumice Images – Browse 133,019 Stock Photos, Vectors, and Video

534 Pumice Stone Stock Photos, High-Res Pictures, and Images - Getty Images