Purchase Selenite with Engraved Chakra Symbol Cabochon Set today. There are many benefits of a cabochon cut. While almost any gemstone can be made en cabochon, opaque gemstones tend to be more popular as cabochons compared to when they are faceted. Especially for opaque gemstones, the goal of the cabochon cut is to help the gemstone appear fuller and denser, as opposed to more brilliant. Selenite crystals sometimes form in thin tabular or mica-like sheets and have been used as window panes as at Santa Sabina in Rome. Selenite crystals sometimes will also exhibit bladed rosette habit (usually transparent and like desert roses) often with accompanying transparent, columnar crystals.