“…Since the discovery by Joswig et al (1999), CaSiO 3 inclusions in diamond have been reported by a number of researchers. Monomineralic CaSiO 3 inclusions as well as CaSiO 3 coexisting with larnite, titanite-structured CaSi 2 O 5 , calcite (aragonite), perovskite, silica polymorphs, orthopyroxene (possibly converted from bridgmanite), clinopyroxene, ringwoodite, ferropericlase, monticellite and cuspidine have been described in diamonds from Kankan, Guinea (Joswig et al, 1999;Stachel et al, 2000;Nasdala et al, 2003); Juína, Brazil (Hayman et al, 2005;Brenker et al, 2007;Walter et al, 2008;Wirth et al, 2009;Bulanova et al, 2010;Pearson et al, 2014;Anzolini et al, 2016;Kaminsky et al, 2016); Machado River, Brazil (Burnham et al, 2016); and the Slave province, Canada (Davies et al, 2004;Tappert et al, 2005). CaSiO 3 was also documented as a daughter mineral of multiphase inclusions in Juína diamond, which presumably formed through the crystallization of carbonatitic melts ).…”