These apophyllite crystals, on chalcedony, are from Jalgoan District in the Maharastra State of India. Many stunning mineral species are recovered in basalt and other igneous deposits in the area. Mineral crystals can be found in vesicles and vugs within the deposits. Apophyllite is in the phyllosilicate mineral class and it contains the elements K, Na, Ca, Si, O, F, and H. Chalcedony is a variety of quartz (Si and O). This stalactite has a core of layered chalcedony that is covered with translucent chacedony and apophyllite crystals. The piece can be displayed from any side. This piece measures 3 x 15/16 x 7/8 inches or 76 x 24 22 mm.