Links

Here are some links that you will find helpful:



https://beyond4cs.com/free-gemology-courses-and-resources/

http://www.uptravel.com

http://www.michigan.org

http://www.lakesuperior.com

http://hunts-upguide.com

http://www.grandmaraismichigan.com

http://www.agatenodule.com

http://www.superagates.com

http://www.lakesuperioragate.com

http://www.sailorenergy.net/Minerals/MineralMain.html

http://www.rockhoundblog.com