Aquamarine
Color: Aquamarine ranges from light blue to blue-green. The name literally means “sea water” and refers to the stone’s soft, clear color. The color is caused by traces of iron within the crystal.
Hardness: 7.5 to 8 on the scale of Mohs. Aquamarine belongs to the beryl family, like emerald. The stone is durable and well suited for jewelry that can be worn daily.
Location: Major sources include Brazil, Pakistan, Nigeria, Madagascar, Mozambique, and Russia.
Types and Characteristics:
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Light blue aquamarine: The most highly valued variety; clear and sparkling with a pure color.
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Blue green aquamarine: Has a slightly warmer tone and is sometimes heat treated to enhance the blue color.
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Milky aquamarine: A cloudy or semi transparent variety; has a soft, milky appearance and is often used in cabochon cut jewelry.
Value: The value of aquamarine is determined by color intensity, clarity, and size. Deep blue, flawless stones without inclusions are the most valuable.