Big juicy geode crystal with baby agate bubble. These crystal formations grew on the bedrock sometime in the last millennia. Perfect conditions and just the right mix of minerals make these gemstone formations. The agate bubble is formed when a air pocket in the lava flow is filled with water. After evaporation, only minerals are left behind to create a cast of the empty space. Pieces like these really capture my interest in geology. #rock2wrap #geology #geologynerd #lavabubbles #lavaflow #millenia #agatenodule #quartzcrystal #minerals #rockhounding #rocks













