Keweenaw Agate Shop

08/13/2026

08/11/2026

New UP Shaped Copper! Polished or Unpolished
Photos By: Ethan Perreault

08/11/2026

New UP shaped copper! Polished or unpolished
Photos By: Ethan Perreault

08/02/2026

This is definitely me’

Me.

08/02/2026

Now you know!

At first glance, this colorful gem might look like a piece of modern art. In reality, it's thomsonite—a rare member of the zeolite mineral group known for its striking concentric patterns and radiating crystal structures.

Many of the finest examples come from the shores of Lake Superior, where rounded nodules are shaped by nature and later polished to reveal their distinctive "eye-like" patterns. The mineral's intricate bands and bursts of color have made it a favorite among collectors and lapidary enthusiasts.

Named after Scottish chemist and mineralogist Thomas Thomson, thomsonite is a reminder that some of nature's most fascinating treasures aren't always the most famous gemstones.

Have you ever seen thomsonite before?

Stone image courtesy of Thomas P. Shearer

06/29/2026

New Biz in Da Harbor! Be sure to check out Cold Plunge Smoothies located on the Isle Royale Ferry dock! Cold. Fresh and Deeeelish!

10/10/2025

LSA’s

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