Obsidian Anatomical Heart

The Science

Obsidian is actually volcanic glass that is formed when lava cools rapidly. It is classified as an igneous rock. Obsidian is very hard and brittle and, when fractured, has extremely sharp edges. In the past, it has been used as a tool for cutting and piercing, and even as scalpel for performing surgery!

The Story

The obsidian used to carve this anatomical heart is from Mexico, and Mesoamericans used obsidian as decorative objects since pre-Columbian times. Mirrors made from obsidian were used by Aztec priests to conjure visions and make prophesies. Native American people also traded obsidian throughout the Americas.