a transparent, light-blue or greenish-blue variety of beryl, used as a gem.
light blue-green or greenish blue.
Historical Examples

aquamarine, which is feebly doubly refracting, separates them but slightly.
A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public Frank Bertram Wade

Topaz and aquamarine occur in hollows in the granite of the Mournes.
Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 6 Various

We sat in the aquamarine twilight, and Fern was shivering, and I put my arm around her.
Exploiter’s End James Causey

aquamarine, a name given to some of the finest varieties of beryl of a sea-green or blue colour.
The New Gresham Encyclopedia. Vol. 1 Part 2 Various

Beryls of the aquamarine type occur in many places, but usually of too pale a tint, or too imperfect, to be worthy of cutting.
A Text-Book of Precious Stones for Jewelers and the Gem-Loving Public Frank Bertram Wade

Very effective combinations of the aquamarine and blue species with the yellow may be recommended.
Scientific American Supplement No. 822 Various

Do they still match my aquamarine, or must it be gray sapphires the next time?
Why Joan? Eleanor Mercein Kelly

Wine-red, aquamarine, pearl-white, and pale gold they gleamed and nodded from slender stems.
Everyday Adventures Samuel Scoville

He saw de Verceuil as well, coming across the hall almost at a run, just ahead of the contessa, his aquamarine cloak flying.
The Saracen: Land of the Infidel Robert Shea

Peachy was at the height of her blonde bloom; all pearl and gold, all rose and aquamarine.
Angel Island Inez Haynes Gillmore

a pale greenish-blue transparent variety of beryl used as a gemstone

a pale blue to greenish-blue colour
(as adjective): an aquamarine dress


1590s, agmarine, “bluish-green type of beryl,” from French or Provençal, from Latin aqua marina “sea water,” from aqua “water” (see aqua-) + marina, fem. of marinus “of the sea” (see marine (adj.)). Apparently first used as a description of a bluish-green color by John Ruskin, 1846. Abbreviation aqua is attested from 1936.


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