Raw Black Obsidian

Raw Black Obsidian/Raw Obsidian, Igneous Rock Specimen – Approx. 3″- Geologist Selected & Hand Processed – Great for Science Classrooms

• OBSIDIAN | Obsidian, also known as volcanic glass, forms from lava that cools almost immediately upon eruption, usually into water
• GREAT FOR GEOLOGY CLASSROOMS | Obsidian shares many physical properties with its major chemical component, quartz, despite looking dissimilar – great for classification exercises
• GEOLOGIST SELECTED | Each specimen is selected and hand processed by an actual geologist, ensuring each sample exhibits defining features