Malachite, Chrysocolla, and Dioptase from the Star of the Congo Mine, Lubumbashi, D.R.C., featuring a rich botryoidal malachite "Shell" over a contrasting blue chrysocolla core. This specimen is especially unusual, with a removable outer “shell” revealing a smooth, rounded interior beneath. Pieces with this kind of formation are rarely seen, making it a standout example from this well-known copper locality. This piece is from Allen Winans Collection.
