Hardness 6.75, Specific gravity 2.7, Refractive index 1.57-1.58

Aquamarine is said to be good for those born under Pisces or who have Jupiter well-placed on the ascendant of their birth chart. They are also good for those born under Leo.

Aquamarine is a variety of beryl. A good Aquamarine is transparent, lustrous, and radiant. It has many of the properties of emerald, and can substitute for that gem. Aquamarine is considered a semi-precious stone, and it is therefore much less expensive than an emerald. Aquamarine is often a bright sky blue. The blue color can be produced by heating greenish, greenish yellow, or brownish beryls. It is not good to use a heat-treated gem for astrological purposes. A good aquamarine should not have any inclusions.

Aquamarines are found in Siberia, the Ural Mountains in Russia, Madagascar, and Brazil.

Mothers derive good benefits from aquamarines, and the stones can help solve marital problems. They are also good for spiritual life and for those interested in humanitarian activities. They are beneficial for those in entertainment, teaching, banking, medicine, travel, sailing, or public relations business. They can also help improve personal problems, and they protect the wearers from being exploited. They help improve one's investment abilities.