The first consistently implodable dense aventurine, Heavy Blue Leprechaun was a game changer! Paul’s newer, more stable aventurine technology produces very densely saturated aventurines with large, dichro-like sparkles. Heavy Blue Leprechaun may be safely imploded into marbles, within reason. Not sensitive to flame atmosphere, but reduction should be avoided on any aventurines before implosion. Please limit long, hot garaging.This is also a good choice for mixing down with other colors to add rainbow sparkles, although it will leave traces of blue.