We mined these plume agates from our “archives”. We will be adding different varieties as we come across them in our “excavation”. Plume agates are beautiful and offer a certain three-dimensional mystery to finished stones.
Agate is a form of microcrystaline quartz. It is usually formed in nodules and has transparent, or translucent portions. As with all of the other species in the quartz family, agate takes a high polish with cerium oxide, but also takes a fine polish with tin oxide and diamond. Mohs hardness 7.