Aquamarine (from Latin: aqua marina, "water of the sea") is a blue or turquoise variety of beryl. It occurs at most localities which yield ordinary beryl. The gem-gravel placer deposits of Sri Lanka contain aquamarine. Clear yellow beryl, such as that occurring in Brazil, is sometimes called aquamarine chrysolite.^{[citation needed]} The deep blue version of aquamarine is calledmaxixe. Maxixe is commonly found in the country of Madagascar. Its color fades to white when exposed to sunlight or is subjected to heat treatment, though the color returns with irradiation.

Considered a "stone of courage," Aquamarine enhances intellectual reasoning and response. It helps to align the chakras and attune one to spiritual awareness. The gentle, compassionate energy can bring tolerance and acceptance. It stimulates and cleanses the throat chakra, enhancing communication.

It is said to temporarily protect one from pollutants and to guard against injury in battle.