Tier 2 donors had an early look at our newest post, but now it’s here for everyone: the prettiest rock! Well, one of the prettiest rocks. There will be others, because seriously, with so many pretty rocks in the world, how do you choose the prettiest?!

Want to be among the first to see neat new geology posts like this, plus get a whole lot of other perks? Become a Tier 2 donor to En Tequila Es Verdad today!