Mimbres Valley rhyolite, otherwise known as Apache Sage Rhyolite, is wrapped in a thick silver bezel, and pinned with a sterling silver rivet set with a 2mm grey diamond. A single drop of rain in the desert. Mined from a small deposit in New Mexico, Mimbres Valley has a fantastic dendritic pattern evocative of the desert landscape it's mined from. Handmade by Following Seas jewelry and one of a kind,this ring is a size 7.5, and is not sizeable.