CaAl 2Si 4O 12 -6H 2OArthur Thomas , Gemstones (2009)
hydrogrossular Massive vein s of opaque Grossular Garnet that resembles Jade . It is white to light green in color, and may be colored in a white, green, and pink combination. Hydrogrossular is often regarded as a variety of Grossular, but it is scientifi