Aquamarine, as in 'Sea Water'. A gemstone-quality transparent variety of beryl, having a delicate blue or turquoise colour, suggestive of the tint of seawater. It's very closely related to the gem emerald. In fact if you think of Aquamarine as a Blue Emerald, you'd not be far off the mark.

Colours vary and yellow beryl, called heliodor; rose pink beryl, morganite; and white beryl, goshenite are known. Hard wearing, doubly refractive, often found in an almost flawless state and very transparent, Aquamarine wins hands down as the jewellers' favourite as it can be cut in an incredible variety of ways. Plus the colour is so flattering to every skin tone. Most Aquamarine still comes from Brazil, but deposits are mined in most continents.

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