These 1.65 ct. t.w. blue and white diamond stud earrings are a colorful take on a jewelry classic! Bright round blue diamonds totaling 1.50 ct. are wreathed in .15 ct. t.w. white diamonds. These spirited studs will find a great companion in any spirited woman! Post/clutch, 14kt white gold earrings. Our blue diamonds are natural diamonds that have been treated which causes the color change and then heated to hold the color. The color change process is permanent. Diamond birthstones are the perfect gift for April birthdays.