EMERALD


All facts and figures taken from the GIA

EMERALD

Emerald is the bluish green to green variety of beryl, a mineral species that includes aquamarine. Gem experts differ on the degree of green that makes one stone an emerald and another stone a less-expensive green beryl. Most gemologists, gemological laboratories, and colored stone dealers call a stone green beryl when its color is “too light” for it to be classified as emerald. Even among that group, however, there’s a difference of opinion about what’s considered “too light.”


MINERAL: Beryl
CHEMISTRY: Be3Al2Si6O18
COLOR: Vibrant green
REFRACTIVE INDEX: 1.577 to 1.583
BIREFRINGENCE: 0.005 to 0.009
SPECIFIC GRAVITY: 2.72
MOHS HARDNESS: 7.5 to 8


As the gem of spring, emerald is the perfect choice as the birthstone for the month of May. It’s also the gem of the twentieth and thirty-fifth wedding anniversaries.

FOUND WHERE

Precious_Gemstone_Where_Found_Emerald