This will be the first of three tutorials on the minor facets, which consist of the lower girdles, the upper girdles, and the star facets. The focus of this tutorial is on the lower girdle facets and how they work together with the star facets to affect the appearance of a diamond. Before I begin, I would like to credit Whiteflash and Good Old Gold for a lot of the images in … [Read more...]
Light Performance Part 2: Brilliance, Fire, and Sparkle
Light performance can be broken down into brilliance (brightness), fire, and scintillation (sparkle). The unique proportions and the optical symmetry of a diamond will give each diamond a slightly different light performance profile. In part one, I explained why light return is important and why you want to avoid light leakage in a diamond. I also showed you that the … [Read more...]