aquamarine

n. semi-precious clear blue stone

Aquamarine (Lat. aqua marinā, "water of the sea") is a gemstone-quality transparent variety of beryl, having a delicate blue or turquoise color, suggestive of the tint of seawater. It's closely related to the gem emerald. Colors vary and yellow beryl, called heliodor; rose pink beryl, morganite; and white beryl, goshenite are known.
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Noun
1. a transparent variety of beryl that is blue green in color
(hypernym) transparent gem
2. a shade of blue tinged with green
(synonym) greenish blue, aqua, turquoise, cobalt blue, peacock blue
(hypernym) blue, blueness

n. aquamarine, semi-precious clear blue stone

n. aquamarine, semi-precious clear blue stone