You can visit his site about Diamond Jewelry. They aren't like the rings of the past, cocktail jewelry or wedding rings. Large stones and elaborate metal working are the standard for these rings.
Explanation of Cut, Color and Clarity of This Diamond
Cut Quality Diamonds of premium cut proportions are almost as good as ideal. Most people will not be able to distinguish an idea cut from premium. Less diamond material is lost in the process of cutting thus making the diamonds less expansive then ideally cut ones. In short premium cut reflects almost as much light as the ideal-cut, but for a lower price.
Color D color diamonds are absolutely colorless. D is the highest color grade. Natural diamonds of this color grade are extremely rare and expensive.
Clarity VS2 Clarity diamonds are very slightly included grade two. VS2 diamonds have minor inclusions that are visible at 10x magnification. They are less expensive than the VS1 clarity grade because they exhibit slightly more inclusions. VS2 clarity diamonds make excellent choices for jewelry because the naked eye will not be able to detect any inclusions.