Thomsonite, Grand Marias, Minnesota geode jewelry 22 x 15 mm -

22 x 15 mm - Mounted In A Standard Perky Box

30 x 22 x 21 mm - Mounted In A Standard Perky Box

as well as 2 internal pyrite cubes

13 x 12 x 12 mm - Mounted In A Standard Perky Box

Thomsonite, Grand Marias, Minnesota geode jewelry 22 x 15 mm -Thomsonite Grand Marais, Cook County, Minnesota, USA Ex. Greg Boles Collection 10 x 8 x 9 mm Mounted In A Standard Perky Box This mineral specimen is from the collection of Gregory Boles. Greg has had a lifelong passion for collecting minerals and other geological items. His hobby started at an early age in 1956 and continues to this day. Greg's enthusiasm for science led him to receive a BS in geology from the University of Kansas in 1987. He