Sophia Learning
Sophia: Geology: Geodes: Lesson 1
This lesson will present how to identify and classify geodes. It is 1 of 2 in the series titled "Geology: Geodes."
3D Toad
3 dtoad.com: Special Geology
A 3-D view of special geological rocks including Anhydrite, Azurite, Celestite, Fluorite, Kyanite, Opal, and Quartz Geode.