minimum 1.35ct 7.5x5.5mm emerald cut blue zircon. zircon comes from the perisian or arabic word zargoon meaning vermilion or gold colored. zircon colors range from colorless yellow orange brown green blue to rarely red. the blues and golden-browns are the most important in jewelry use blue being the rarest. zircon has tremendous fire and dipsersion owing to a dispersion rate of .039 nearly has high as diamond and much higher than other gemstones. it is a 6.5-7.5 on mohs scale.
