Our CBD crystals are more than 99% pure and are extracted from certified hemp through partnerships with farms throughout Europe. CBD crystals have a broad spectrum of uses, that for consumers include: mixing with your favorite e-liquid, mixing with a carrier oil. .CBD is a compound found and extracted from specific hemp strains. Contrary to THC, it has no psychotropic or hallucinogenic effects. Harmony CBD Crystals are the purest CBD isolate you will.