A very impressive and attractive specimen of the rare calcium arsenic borate Cahnite from the Franklin mine. The piece comes from the Richard Kosnar and Frank Edwards collections, and retains the Frank Edwards label dating the piece to 1967. Cahnite was named after noted mineral dealer, Lazard Cahnite, and Franklin is the type locality for the species. The specimen hosts small chalk-white Cahnite crystals on beautifully contrasting pink Rhodonite. The closeup photo shows that the Cahnite crystals are terminated, and some of the Rhodonite crystals are remarkably gemmy and rich in color. The largest group of Cahnite crystals measures 1.1 cm across.