The Citi ® Diamond Preferred ® Credit Card is a personal credit card from Citi ® Diamond Preferred ® Credit Card. Application typically pulls a hard report from Experian. The annual fee is $0. The ongoing APR is null after a Low intro APR on balance transfers for months introductory rate. Approval typically requires a credit score of 650-700 or higher. Signup bonus: null. Rewards: null. Cash back: null. Application rules: Citi enforces an 8/65/95 rule (max 1 card per 8 days, 2 cards per 65 days, no more than 1 business-card every 95 days). Sign-up bonuses on Citi cards are restricted to 48 months from your last bonus on that card family..