Petalite, Paprok, Nooristan Province, Afghanistan, Dr. David London Collection L-289, Medium Cabinet 4.5 x 7.5 x 11.0 cm, $400. Online Sept. 30.
A large crystal of semi-transparent petalite showing dissolution features and regrowth. Specimen is crystallized on all sides with no apparent point of attachment. A fine specimen of this fairly rare lithium aluminum silicate. Figured in London article in Rocks & Minerals. In top condition.