Rolex and as far as I know, are unique in the diamonds used. Watches normally do not use large stones. That holds true most times except for Greubel Forsey and Rolex. The standards in the diamonds Rolex uses are incredibly high. Only diamonds that are at least IF in clarity are used and only diamonds that are between D and G in color are used. These standards include only the four highest grades of color. This becomes VERY clear when you place a Rolex with diamonds next to another. White. Very white.