NH66AH3: Geometry and a very intense luster characterize this twin of two crystals, a twin that is splendidly well defined and that has the added “touch” of very sharp laminar and perfectly defined Muscovite crystals.
Mount Xuebaoding, Pingwu, Mianyang Prefecture, Sichuan Province  China (2017)

Specimen size: 3.8 × 2.7 × 2 cm = 1.50” × 1.06” × 0.79”