Diamond Section Diamond jewelry has become a part of daily wear for the upper middle class of Kerala. Diamonds are being adventurously matched with metals like white gold and platinum for a chic, contemporary look. There are ever-favorite baguettes, marquis, classical white diamonds and equally fashionable black, blue and brown diamonds. The weight of diamond is in terms of Carat (1 Diamond Carat = 200 Milligrams of Diamond). The 4 C’s (Cut, Clarity, Caratage .