Keyshia Ka'oir Davisis keeping her wrists and neck on chill, because Gucci Mane's wife just dropped a quarter million dollars on a jewelry shopping spree!!! We're told Keyshia spent a cool 6-figures and picked up her new bling this week at Diamond Club Miami ... and then she hit up a Heat game and showed off her ice. Keyshia threw down $250k on 2 bracelets and 2 chains, and get this ... the custom Cuban link pieces are dripping with Baguette diamonds weighing in at a total of 120 carats. Check out the charms on Keyshia's bracelet ... she's got her name, a sports car, a shopping bag and the logo for Gucci's record ... (full story)