Question: what is 2.2 carat diamond?
Answer: What is a 2 Carat Diamond? A 2 Carat (or Two Carat) Diamond simply refers to the weight of the diamond. 2 carat equals 400 milligrams, or 0.4 grams. To put it in perspective, a 2 Carat Diamond weighs roughly the same as half of a raisin.