Emerald

Emerald is the bluish green to green variety of beryl, a mineral species that includes aquamarine.

BRIEF INTRO

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.”

2.97 BILLION YEARS

Age of the oldest emeralds, from South Africa.

CLEOPATRA

Pharaoh known for her passion for emeralds.

$6,578,500

2011 sales price for Elizabeth Taylor’s emerald pendant -  a record $280,000 per carat.

TREATMENTS

There are processes used to alter the color, apparent clarity, or improve the durability of gems. Some gemstones have synthetic counterparts that have essentially the same chemical, physical, and optical properties, but are grown by man in a laboratory.

MAY

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.

Traces of chromium give this red variety of the mineral corundum its rich color. Long valued by humans of many cultures. In ancient Sanskrit, ruby was called ratnaraj, or “king of precious stones.”