Pre-rolls combined with pure THCA Diamonds also made in BC. THCA Diamond Infused Pre-rolls are the evolution of the infused pre-roll. Phant infused pre-rolls use high-quality indoor BC cannabis, not shake or outdoor product. The cannabis is then combined with pure THCA Diamonds also made in BC. The concentrated THCA diamond is evenly distributed throughout the cannabis flower prior to rolling. This approach gives the Diamond Infused pre-roll an advantage over other types of infused pre-rolls because it burns consistently.