Dr. Zodiak’s Moonrock Cartridge – Ghost (1.0g) Dr. Zodiak’s Moonrock Clear Cartridge is a high-end THC distillate that tests approximately 90%. The Ghost 1-gram cartridge is manufactured with a multi-step method of cannabis purification, infused with all-natural terpenes. This cartridge will sneak up on you like a ghost and send you straight to the moon.