Corundum laths have been identified as exsolution products from both ilmenite and spinel in granulite facies rocks from central Australia. The exsolution is interpreted as having occurred during a decrease in the P‐T conditions under which the minerals initially crystallized. The ilmenite + corundum possibly indicate the existence of a former homogeneous iron‐högboemite. The spinel + corundum suggests that under conditions of high Ps‐T (granulite facies) and low fo2 there exists a field where aluminous spinel is stable.