Agate Types & Geological Properties of the Agate Crystal
Agate Types & Geological Properties of the Agate Crystal The agate crystal is a microcrystalline-quartz mineraloid that has a lustrous display of multi-color banding and results from long-term accumulations of siliceous groundwater deposits in rock cavities. Much like other mineraloids, all agate types form over thousands of years inside the existing voids of other igneous,…