Quest Rare Minerals Ltd. announced that it has produced a heavy rare earth plus yttrium (HREE+Y) concentrate with a purity level of approximately 84% from Quest's metallurgical test work, of which 75% is composed of yttrium oxide. Quest anticipates that further improvements in product quality and recoveries will be made. Quest has also successfully produced a separate light rare earth (LREE) concentrate, and high-purity zirconia product using Strange Lake B-Zone materials from ongoing test work at Hazen Research and Process Research Ortech.

Quest has engaged the Helmholtz Institute for Resource Technology in Germany and SGS in Lakefield, Ontario for peer reviews of its metallurgical processes.