During the period June 2008 to October 2011, the Geological Survey of South Australia was one of the sponsors for a Mineral and Energy Research Institute of Western Australia research project conducted using the zircon U-Th-Pb-He double dating technique, which was aiming to differentiate between detrital zircon crystals of kimberlitic (i.e. lower to mid-crustal) origin and those of upper crustal provenance. Rocks at several Australian diamondiferous kimberlite intrusive sites were sampled as part of this project, including a kimberlite dyke from South Australia’s Eurelia Kimberlite Province dyke swarm, which latter comprises a discrete occurrence of over forty known dykes. The project methodology successfully differentiated between detrital kimberlitic zircon and host country rock zircon present at Eurelia, and was able to detect kimberlitic zircon mobilised within stream sediments sampled at distances of up to 350 m from the kimberlite dyke source. A zircon (U-Th)/He mid-Permian age of 277 Ma was determined for the kimberlite. This contrasts with previously determined Jurassic ages of about 170 Ma for other dykes in the area, and supports a multi-phase intrusive history as suggested by previous workers, based on individual dyke mineralogy, chemistry and geographical distribution. The dating has provided the first geochronological evidence of a Permian diamondiferous kimberlite intrusive event in South Australia. This intrusive event may account for the previously unexplained origin of alluvial diamonds that have been found within Late Permian sediments of the proximal Springfield Basin.