Green heated aquamarine is a blue aquamarine that was originally mined with a greenish tint and then heated to remove the green:

• Color: Most aquamarines are mined with a pale bluish green tint, but heating removes the green and leaves a pure blue color.

• Treatment: Heating aquamarine to around 800°F is a common practice to remove the green tint and create a more stable and permanent blue color.

• Value: The more intense the blue color, the more valuable the aquamarine.

• Identification: It's impossible to tell if an aquamarine has been heated, so gemologists will label any intense blue aquamarines as "possibly heat treated".

• Popularity: Aquamarine is a popular gemstone because it's durable, affordable, and complements most skin tones.

• Other names: Aquamarine is a variety of the beryl mineral family, and its name comes from the Latin words aqua (water) and marine (of the sea).

• Birthstone: Aquamarine is the birthstone for March.