Vuitton showcases the world's second largest diamond Weighing 350 grams and roughly the size of a tennis ball, the second largest uncut diamond in the world is being showcased in Paris by Louis Vuitton. Better known for its luxury ready-to-wear, Vuitton hopes to establish itself in the elite world of luxury jewellery with this extraordinary stone, discovered in Botswana and christened "Sewelô". IMAGES