AAA+ Black Diamond 18-24% THCBlack Diamond, which is otherwise referred to as 'Black Diamond OG' and sometimes as 'Black Diamond OG Kush', is the medical marijuana strain which is bred in the Northern California region as clone-only strain. This is an indica-dominant strain and is considered as a rare strain. The THC levels of this strain range between 18 and 24%. The buds of the plant will be remarkably frosted with few of the remarkable trichomes.