Obsidian Specimen, Obsidian Specimen, also known as volcanic glass, forms from lava that cools almost immediately upon eruption., Each

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Here is the corrected text: Raw Obsidian Specimen - Single Sample, 1" Obsidian, also known as volcanic glass, forms when lava cools almost immediately upon eruption, usually into water. It is excellent for classroom mineral study and identification. Although obsidian shares many physical properties with its major chemical component, quartz, it looks dissimilar, making it great for classification exercises. While each specimen will vary slightly in shape, size, and color, it will measure approximately 1" in length. Each specimen is individually packaged, labeled, and barcoded for easy identification and storage. Selected and Processed by a Geologist - Each specimen is selected and hand-processed by an actual geologist, ensuring that each sample exhibits defining features. Our rocks and minerals are sourced from various locations around the world and are processed by hand in Victor, NY. Technical Support - Always feel free to reach out to our team of scientists and geologists for additional information or to assist you with any questions regarding our rock and mineral samples.