Growth history of an eclogitic diamond from the Kaal Valley kimberlite, South Africa - an infrared, cathodoluminescence and carbon isotope study

Introduction: A (100) polished section was prepared through an octahedral diamond (KV2A) extracted from an eclogite xenolith from the Kaal Vallei kimberlite. South Africa. The internal structure of the diamond was examined by cathodoluminescence at low and high resolutions. The diamond plate was mapped for hydrogen and nitrogen using a infrared (IR) microscope and several IR traverses across the specimen were undertaken. An ion microprobe carbon isotope study is currently in progress.