May Birthstone

May Birthstone – Emerald

emerald-birthstone

previous month zodiac signs next month 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 green Emerald, the green…