Don’t you just love these ice crystals growing between logs in the pond? Crystals are endlessly fascinating, whether these common but evanescent* ice crystals or the incredibly huge, unimaginably ancient gypsum crystals in the Mexican Cueva de los Cristales: http://news.nationalgeographic.com/news/2007/04/photogalleries/giant-crystals-cave/ *Evanescent – Soon passing out of sight, memory, or existence; quickly fading or disappearing. Oh, how I love finding the perfect word, one that expresses exactly what I wanted to say as economically as possible! 🙂

Pond Crystals

Hmm, ice crystals grow relatively quickly at temperatures of around 32 degrees F, while the gypsum crystals formed incredibly slowly (over millennia) at around 136 degrees F.