Jet-Hematite Swarovski 1088 Xirius Pointed Back Chatons are available below. The Chaton with a Xirius cut is a popular round stone that features a pointed back and 16 alternating facets on its top. It is usually set in jewelry settings or castings. It is available in Jet-Hematite in the sizes listed below. It is made of "advanced crystal" and is lead free.