Crystalline structures, primarily THCA, that are developed in sauce extracts or isolated on their own. In a jar of sauce, diamonds are the crystalline structures that develop at the bottom of the container. Concentrate enthusiasts will be familiar with sauce carts, or vape cartridges loaded with terpene-heavy sauce. These cannabis diamonds may also refer to the crystalline structures left over after terp sauce has been removed from the initial sauce mixture. These diamonds are usually coated in residual sauce. Diamonds can also refer to pure crystalline THCA that have been isolated from refined oil.