In order of Apperance

Picture Citations

https://media.goboard.io/elephant-rock

http://www.enchantedalchemists.com/Amethyst-Geode

https://media.goboard.io/Sand

http://www.britannica.com/EBchecked/topic/88899/calcite/images-videos/139343/coquina

https://media.goboard.io/File:(1)shale_from_Asgard_Swamp_mine.jpg

https://media.goboard.io/358359211

https://media.goboard.io/Obsidian

https://media.goboard.io/granite.shtml

http://skywalker.cochise.edu/wellerr/rocks/mtrx/gneissL.htm

https://media.goboard.io/Marble

https://media.goboard.io/difficult-rocks

http://feelgrafix.com/881007-rocks-wallpaper.html

http://pofff.com/2011/10/12/fluorite-cool-stone-of-many-colors/