•1kg BLACK VOLCANIC ROCK AKA LAVA ROCKS
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•NOTICE TO THE BUYER:
•THIS IS A NATURAL VOLCANIC ROCK. PLEASE SIMPLY WASH BEFORE USING. DIRTS WHEN QUARRYING IS UNAVOIDABLE.
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•Can Be Used in:
•-Aquarium Beneficial Bacteria Storage
•-Aquascaping Designs
•-Aquarium / Pond Filter Media
•-School Projects
•-Landscaping
•-Artworks
•-Possible Heating media (Electric Grill)
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•The lavas of different volcanoes, when cooled and hardened, differ much in their appearance and composition. If a rhyolite lava-stream cools quickly, it can quickly freeze into a black glassy substance called obsidian. When filled with bubbles of gas, the same lava may form the spongy appearing pumice. Allowed to cool slowly, it forms a light-colored, uniformly solid rock called rhyolite.