half agate stone with crystalline interior and vibrant patterns

geologicalstructure compositiondetail naturecloseup texturedetail mineralstone naturedesign crystalline composition concentric decoration earthstone geographic geological mineralogy smoothness geometric patterned fragility geography macroshot structure interior patterns crystals vibrant closeup crystal geology mineral organic pattern surface texture hollow violet center filled beauty design detail earthy nature smooth agate stone outer shows white brown earth macro rocks rough edge gray pink raw