Born from billion-year-old lava and polished by Ice Age glaciers, the Lake Superior Agate is Minnesota’s state gemstone and one of the world’s most storied natural wonders. Its fiery bands of red, orange, and gold tell a tale of volcanic origin, iron chemistry, and glacial migration across the Upper Midwest.
Tube Agate is a unique form of chalcedony filled with cylindrical mineral growths that resemble microscopic tunnels frozen in quartz. Formed in volcanic cavities where silica-rich fluids filled and coated hollow channels, it captures the dynamic flow of ancient hydrothermal systems—revealing time itself layered inside stone.
Sagenite Agate is a striking variety of chalcedony filled with delicate mineral needles—networks of rutile, goethite, or iron oxides suspended in translucent quartz. Found in volcanic regions worldwide, these “frozen filaments” capture a geologic moment when molten silica met mineral growth, creating one of nature’s most intricate agate masterpieces.
Forged in ancient volcanic flows, Thunder Eggs are rhyolite nodules lined with agate, jasper, or quartz that reveal breathtaking patterns when cut open. Found in Oregon, New Mexico, and worldwide, these natural “geodes” record the fiery breath of Earth and the artistry of silica crystallizing in stone.
