Diamond size is usually described by carat weight rather than measurements. Color can range from colorless to light yellow. Colorless and near colorless diamonds will appear more white. The color of metal in the gem setting can also affect how a diamond’s color appears. The clarity of a diamond affects the rarity of the diamond and although flaws my not be visible to the naked eye, they may dramatically affect the price. Brilliance is determined by the cut of the diamond and is in the hands of a master craftsman to create. This is why two diamonds of differing clarity may appear to be equally as brilliant to the naked eye.