0.58ct Pear Shape Fancy Blue DiamondCarat Weight: 0. 58 carats Shape: Pear Shape GIA Color Clarity Grade: Fancy Blue I1 As an Argyle Pink Diamonds Authorized Partner, J FINE is one of only a few companies in the world with direct access to these special gems. Most natural blue diamonds get their color from trace amounts of boron in the diamond's lattice structure, and the color can range from a pale or pastel blue to a vibrant reflex blue and sometimes even a violet color. The majority