The Jubilee Diamond is BACK!!! A High Definition video demonstrating the optics of the Jubilee can be seen here and our original tutorial can be read here for more on this incredibly awesome Square Hearts and Arrows Diamond.   A longer video is being completed as I post this and will be published shortly. 11/14/08 Also... Just published a nice demonstration video comparing 4 Round Brilliant Cut Diamonds each hand selected by our lab for Light Performance that vary notably in their optics.    Click to also view our introductory video's to the Princess of Hearts and The Cushette Diamond.