Post #1869287

This Laguna agate displays the characteristic fortification banding that makes this locality famous among collectors. The medium-width bands create concentric patterns in yellow, red, and white, formed as silica-rich solutions deposited successive layers in a volcanic cavity. The central void shows where the original gas bubble created space for agate formation. The swirling band geometry indicates varying flow conditions during deposition, typical of the complex hydrothermal processes at…