Dendritic Agate Ring, Lone Tree | Size K 1/2So striking yet simple, this ethically sourced Dendritic Agate with a beautiful tree like image is set in recycled sterling silver on a reverse D shaped ring band. With a lustrous satin finish, this ring is minimal and one of a kind. The ethereal images captured in these gemstones are called "dendrites", caused by a mixture of iron and manganese mineral deposits trapped inside the gemstone when the agate forms. It never ceases to amaze me how