The cost of a diamond is drastically motivated by means of its colour. Diamonds graded D via F are considered colorless and are typically extra expensive due to their rarity and the mild overall performance they provide. as the shade grade movements from G to Z, diamonds can display growing tints of yellow or brown, which generally decreases their value. however, positive hues can be applicable in fancy colored diamonds, in which colorations like crimson, blue, or green can command top rate expenses.