Amazing Green Gem Sphalerite on Quartz From Krushev Dol - Etsy
Northeast Treasure Hunter's Gem and Mineral Guide (6th Edition): Where and How to Dig, Pan and Mine Your Own Gems and Minerals: Rygle, Kathy J., Pederson, Stephen F., Matlins PG FGA, Antoinette:
ALGEM NATURA - Dol Gem - Joint Supplement 60 Pills