Star Diamond Corporation announced that Rio Tinto Exploration Canada (RTEC) has commenced the sonic and core drilling of up to 25 pilot holes on the Orion South Kimberlite. The sonic drilling provides a detailed log of the overburden stratigraphy above the kimberlite, while the core holes are being drilled to generate detailed logs of the kimberlite geology at each locality in preparation for RTEC's bulk sampling with the Trench Cutter Sampling Rig. The Orion South Kimberlite is located within the Corporation's Star - Orion South Diamond Project, in the Fort à la Corne diamond district of central Saskatchewan, Canada, on mineral dispositions held 100% by Star Diamond. The sonic drilling is being conducted by Boart Longyear Inc. using two drill rigs, while the core drilling program is being conducted by George Downing Estate Drilling Ltd. also using two drill rigs. RTEC geologists are responsible for the supervision of the drilling programs. Detailed geotechnical logging of the core collected by the sonic rig is being completed by Clifton Associates Ltd. Star Diamond and RTEC geologists are in the process of completing the detailed core logging.