Gemstone -
Aquamarine is the name given to the watery sea blue colored version of beryl. The name is a combination of two Latin words, “aqua” for water and “mare” meaning sea. Beryl is the same mineral family as emerald and Aquamarine is often cut into square and rectangle shapes like them. Aquamarine lacks inclusions sometimes found in emeralds. Prized colors for Aquamarine are not exact, ranging from brilliant, highly colored blue stones to nearly colorless tinted specimens. Color may be pale, blue-green or teal, or vibrantly sky blue to richer, darker tones. Both deeply colored and lightly tinted stones are used in jewelry and stones may be heated to enhance color.

Aquamarine gets its blue color from the presence of corundum or iron. When corundum is present, the stone is called sometimes called Oriental Aquamarine. Luster is vitreous to resinous. Cleavage in Aquamarine is tricky, making it a good candidate for larger shapes like square, rectangle, oval, lozenge, and teardrop, and often with smaller facets on the surface to bring out the refractive qualities producing that desired brilliant sparkle. Although usually found in these shapes, some cabochon stones will display a cat’s eye known as asterism. Even skilled gemstone cutters still favor designs showing larger surfaces for Aquamarine due to the stone’s unblemished construction and uniform seawater color. The superb perfection of color and availability of varying shades makes Aquamarine a favorite among art nouveau and modern jewelry designers. 

The soothing colors of blue reminiscent of water have associated Aquamarine with sailors and the sea, and make it a highly coveted choice for summer and spring jewelry, especially when matched with other bright stones in greens, purples, and yellows. This stone has an advantage in pale blue shades that it can also be paired with cooler weather jewelry in black or white, and clear and smoky tone gemstones. 
Compound : Beryllium Aluminum Silicate Mineral
Mohs Scale(Hardness) : 7.5-8
Found : Brazil, Kenya, Madagascar, Pakistan, Tanzania, United States, and Zambia