Tag Archive for virgo birthstone

Virgo Birthstone – Emerald

emerald-birthstone

previous sign calendar months(Aug 23 – Sep 22) next sign Emerald fact file Crystal Structure: hexagonal Chemical Composition: Beryl – silicate of Beryllium and Aluminum Al2Be3(Si6O18) Hardness: 7.5 to 8 MOHS Refractive Index: 1.57 to 1.60 Colors: light to dark…