A number of photographs in Figure 9 of the same two Cubic Zirconia stones have been taken in various types of typical lighting. The photo on the gray tray (fourth from the top) is taken inside Diamond Dock.

Figure 9. Several photographs of the same good (left) and bad (right) Cubic Zirconia stones (used for Ideal-scope demonstrations) were taken in various lightings. The photo on the gray tray is taken inside Diamond Dock

The stone on the left is a very well cut CZ used as a calibration stone with an Ideal-scope. The stone on the right is an extremely steep / deep stone that is used to demonstrate how poor a bad cut can be. When viewed in the Diamond Dock the relative difference between these two stones was minimal. There was perhaps the least difference between the beauty of the CZ's that I have witnessed; I always carry these two stones with me in a small viewing box as a tool for analysis of the effects of various types of lighting.