Michigan Isle Royale Greenstone and Green Thomsonite Bypass Ring
Isle Royale Greenstone, also known as Chlorastrolite, was named Michigan's State Gemstone in 1972. It can only be found in two places in Michigan, along the shorlines of Isle Royale Island and the Keweenaw Peninsula. The stone was created around one billion years ago, after the lava flows settled and hardened.
Thomsonite was created in the empty spaces in hardened lava flow around 600 million years ago. Over the years, those hollow spaces were filled with a variety of minerals which give Thomsonite its unique and treasured color varietions, with pure Thomsonite being snow-white to translucent. Varying levels of copper and iron give it a range of colors — tan, pink, green, red, and brown.
Isle Royale Greenstone: 5/16" Wide x 5/16" Tall
Thomsonite Stone: 7/16" Wide x 5/16" Tall
Ring Size: 6 1/4. This style of ring can be self-adjusted 1/4 of a size in either direction.
* Custom ring, what you see is what you get!
* For custom ring sizing, please contact us.