Similar to the diamond in its brilliance and high dispersion. This is the lucky stone of those born in December. Blue zircon is the most well known. Other colors are much sought after by collectors.
Formula: ZrSiO4
Hardness:
6.5 – 7.5
Density:
3.91 – 4.73 g/cm3
Refractive Index: 1.790 – 2.015 DR: 0.005 – 0.055
Color:
Colorless, blue, green, yellow, brown, orange, red
Countries of Origin:
Sri Lanka, Vietnam, Cambodia, Myanmar, Tanzania
Birthstone: December