Night owl Mangos N Chem was almost crystalline in structure and very blonde. Melts quite nicelyI noticed that I get more leakage with oilier rosins, like the Mephisto Sundae Thumper. The rosin from Jean-O's WTF, VooDoo, and Poison Bear OG don't leak much. Their rosins are so solid I can carry the jar upside down in my pocket and it doesn't get on the lid of the jar. I'm using an Ooze Beacon though, not a Lookah Swordfish. I yam what I yam (a cheapskate).