Blue Zircon & Diamond Earrings in Yellow Gold & PlatinumBlue Zircon Diamond Earrings in Yellow Gold Platinum. These stunning modern earrings have an eye catching display of color. The center stones are round cut blue zircon that provide a mesmerizing color tone. A halo of old European cut diamonds add sparkle and texture as well as a design element reminiscent of the Victorian period. Finished in both yellow gold and platinum, these stunning earrings can work in any situation!