The crystals for methylone in platinic bromide reagent are thick, yellow prisms and tablets. The crystals are bright yellow under crossed polars with interference colors showing where the tablets are thick or stacked.
The tablets are easily studied by IR microspectroscopy. However, the thickness of the tablets causes distortions in the transmission IR spectrum. Crystals have to be chosen carefully to get spectra that are information-rich and consistent with methylone.