Gilbertson, A. (2013). Optimizing Face-Up Appearance in Colored Gemstone Faceting. Gems & Gemology, 49(2), 64-81. Link to Article
Gilbertson, A. (2013). Optimizing Face-Up Appearance in Colored Gemstone Faceting. Gems & Gemology, 49(2), 64-81. Link to Article