"Fantasia" has a striking floral pattern and rich tropical hues. The crystals of THC or tetrahydrocannabinol were grown by evaporation on a microscope slide and photographed through a microscope. THC is a psychoactive component of the hemp plant, which was first domesticated over 12,000 years ago.  The crystal facets create these beautiful colors by the refraction of light through the prism-shaped crystal array.