Obsidian Square someone would reasonably assume this

someone would reasonably assume this is a fossil specimen showcasing some form of plant material

Light entering the mineral reflects off these inclusions

Weight: ~ 8 oz

nutrient-rich waters to house many species of these trilobites

Chemical Formula: SiO₂ (Amorphous Volcanic Glass)

Obsidian Square someone would reasonably assume thisSize: 2. 0 in. Weight: 1. 2 oz Chemical Formula: SiO (Amorphous Volcanic Glass) Commonly found in Italy, Scotland, Mexico, Argentina, Greece, Iceland, Russia, New Zealand, Japan, and The United States. Obsidian is a naturally occurring form of volcanic glass. Obsidian forms as lava cools very rapidly and is not considered a mineral as its lacks any form of crystal structure. It is said that obsidian is actually a mistranslation from Pliny the Elder's