The first thing you need to do before you buy your aquamarine, or any other gemstone for that matter, is decide the color of the gem you want to buy. A deeper blue aquamarine is the most valued of all aquamarines. But some people prefer the greenish-blue or bluish-green hues of aquamarine because of the vivid colors; and these are relatively less expensive. The pale blue aquamarine, if cut well, can dazzle almost like a diamond, for a fraction of the money spent.

Once you have selected the color, you need to check clarity of the gemstone. Eye clean gemstones cost more than the ones with inclusions. Aquamarines are usually free of inclusions and blessed with excellent clarity. So with clarity not being the major issues, you need to check your aquamarine for fractures or feathers.

When buying an aquamarine, choose a higher carat. Large aquamarines are not rare to find thus a little increase in carat does not increase the price exorbitantly. Moreover, the higher carat stones will have the best color.

Aquamarines naturally occur in large sizes; hence these gems can make great center stones for any jewelry or setting. This gemstone looks charming in any metal setting be it a platinum or white gold setting which compliments the soothing blue, or be it a yellow gold setting which provides a warm appearance. Aquamarines look exquisite when accompanied by diamonds. Diamonds give a dazzle to the icy blue, providing it a life like appearance.

Aquamarines are almost always heat-treated to remove inclusions, which is a well accepted norm in the jewelry industry. High temperature is used to remove the iron impurities from an aquamarine, making it appear true blue in color and enhancing its appearance. This treatment is permanent and cannot be detected.

Aquamarine stones need to be cleaned often to keep their brilliant sparkle. A thorough, soft brush scrubbing with a commercial jewelry cleaner or liquid detergent and water is sufficient to care for your gemstone if done at intervals such as every third or fourth time you wear it.

The first aquamarines were found in Madagascar. The gemstones from Madagascar were medium dark blue in color. However in recent times production from these mines has waned. Today, Brazil has become the most abundant supplier of aquamarine. The 'Santa Maria' class of aquamarines from Brazil is perhaps the most celebrated of aquamarines in the world. These particular gemstones have a rare, intense blue hue, which is the most prized color in an aquamarine. Similar nuances, 'Santa Maria Africana' aquamarines, are produced in Mozambique, Africa. Other sources of aquamarine are the African countries of Tanzania, Kenya and Nigeria, the island of Sri Lanka, Afghanistan, Pakistan and Russia.

The sailor's lucky stone, aquamarine ostensibly captures the beauty of the oceans and the vividness of the sky. This vibrant gemstone is available in a spectrum of shades ranging from light blue to sky blue to teal. The name aquamarine has a Latin origin - 'aqua' meaning sea and 'mare' meaning water. According to legend, aquamarine originated in the treasure chest of mermaids and since then has been associated with the ocean. In olden times, aquamarines were worn as amulets by Greek sailors to please the sea God. According to an age-old belief, an aquamarine's strengths are developed to their best extent when it is placed in water which is bathed in sunlight. It is believed that an aquamarine bestows a happy marriage and helps to embellish mutual love. Aquamarine is also deemed to bring joy and wealth to the wearer.

In ancient times, people have considered aquamarine as the stone that ushers good feelings and that has a positive influence on life. The soothing color of this gemstone is presumed to enliven sympathy, trust, harmony and friendship. Aquamarine is also believed to help cure insomnia. Emperor Nero is said to have used an aquamarine crystal as an eyeglass some 2000 years ago. Later Germans used aquamarine crystals as lenses to correct shortsightedness. In fact, the German name for eyeglasses today is "brille", derived from the mineral beryl which is the name of the mineral family of aquamarine as well as its stone sister, the emerald. Aquamarine is the birthstone for the month of March as classified by the American National Association of Jewelers, as well as the stone for zodiac signs Scorpio and Pisces. Aquamarine jewelry is also a popular gift for 16th and 19th wedding anniversaries.