It a cross between an oval and a marquise what we call a moval. Vivid Blue Diamond, $32 million Sotheby Hong Kong, April 2016A vivid blue diamond alone is rare, but when it over 10 carats and oval shaped, it is even more exceptional. That why this 10.10 carat vivid blue diamond ring flanked by two pear shaped diamonds fetched more than $30 million. My Sisters and I Are Fighting Over These 30...