Loose pink diamonds are graded according to their colour intensity. Argyle diamonds will use an intensity scale from 1 to 9, with the former being the most intense colour through to the latter being the lightest. The Argyle colour scale also uses the following acronyms: PP (Purplish Pink), P (Pink), PR (Pink Rose), PC (Pink Champagne). In terms of GIA, loose pink diamonds are graded as follows: faint, very light, light, fancy light, fancy, fancy intense, fancy vivid, fancy deep.