This is because most of them feel that fancy colored stones allow them to make a strong statement through their wedding and engagement rings. This has in turn increased the demand and sale of fancy colored diamond rings. Purple diamond engagement rings are considered as one of the most valuable colored diamond rings. These types of diamond rings have made news on several occasions but one of the well-known stories regarding purple diamond rings involves the NBA legend, Kobe Bryant and his wife. Kobe is one of the most famous basketball players and he has won NBA championship on three different occasions.     Kobe gifted a unique 8-carat purple diamond ring to his wife, Vanessa, to tell her how much he loves and adores her. The price of the Kobe Bryant diamond ring was estimated to be around 4 million dollars. The diamond contained multiple numbers of white diamonds whose carat weight was rumored to be around 4.87 carats. The white diamonds were set on about 70 grams of 14 karats white and yellow gold.