Isle Royale Greenstone

Isle Royale Greenstones are forever going to be a part of Michigan''s rich cultural and mining history. Most of the gem-grade greenstones used in jewelry today come from tailings of old mines in Michigan''s Keweenaw Peninsula. Searching for these mysterious and rare greenstones has always been a challenge to people.

This book is for anyone interested in planning a trip to find greenstones and offer...