This is actually quite nice an, melts evenly without random burnouts. No strange spiderweb / silk / protein gum style stranding while cooling and contracting. Seems to indicate that it doesn't contain those particular cuts with similar melting and boiling points however when changing phase present substantial expansion and shrinkage rates as to material density per unit volume. The small and evenly distributed segmentation seems to be consistent with higher purity dextroamphetamine with less of the typically mixed in levoamphetamine. My experience is that levoamphetamine tends to have a lower boiling point as it is easier to scorch, also those recipes seem to end up with more remnant solids that by cooling processes don't ever really get filtered out, because to accomplish that it would lose a lot of its weight. But, why should that matter anymore? Properly wash your crystals with appropriate chemical methods, people. No one wants brown shit in their pipe they didn't put in or burn themselves. And no one especially wants lithium burns in their mouths, nostrils, or skin because someone was lazy and used a shortcut.