Crown of Light Diamond Ring

Ring size 5.5, it was purchased from Diamonds International in Grand Turk. The center diamond is a Crown of Light Diamond specific to Diamonds International, COL diamond is 0.264 cts and the remaining diamonds equal 0.67 cts, will include copy of receipt and the card that has the center diamond info. Diamonds international told me if I ever wanted to upgrade I could trade this ring in for credit in the amount I paid ($4607) but there is upgrade requirements. Metal is white gold