Bluffy Share definition Flag Bluffy is a term used in the diamond business to refer to a stone that looks higher in quality than it actually is. "Jeanette's man got her a 3 carat ring- it's definitely a bluffy" Bluffy by DD4LYF May 27, 2018 0 0 Get merch Get the Bluffy mug. Buy Now — $32.95 See more merch