Research, consultancy and supply services for gem and specimen zircon, with a focus on zircon chemical “fingerprinting”, specimen crystals, faceted gems, and laboratory reference material, all from the high purity zircon of the Mud Tank carbonatite, Strangways Range, central Australia (see The Mineralogical Record 51(6) pages 815-824 (2020 ), and Geostandards and Geoanalytical Research 43, pages 339-354 (2019).