Aquamarine

Pear aquamarine
2.92 carats
© Palagems

Aquamarine (from Latin: aqua marina, "water of the sea") is so named because of its seawater color. It is a blue variety of beryl.

24 photos

Aquamarine Gemstones by Colour

This table shows the variety of hues this gemstone can be found in. Click on a photo for more information.

Aquamarine Gemstones by Size

This table shows distribution of Aquamarine gemstone sizes that are listed on this site. This can give a good indication as to the general availability of this gemstone in different sizes.

Contributed photos

Lightest:0.56 cts

Heaviest:33.58 cts

Average:10.63 cts

Total photos:24

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0.56ct to 3.86ct3.86ct to 7.16ct7.16ct to 10.47ct10.47ct to 13.77ct13.77ct to 17.07ct17.07ct to 20.37ct20.37ct to 23.67ct23.67ct to 26.98ct26.98ct to 30.28ct30.28ct to 33.58ct

General Information
A variety or type of:	Beryl
Aquamarine Treatments
Greenish hue removed by heat-treatment - Blue Chart Gem Identification, Herve Nicolas Lazzarelli, 2010, p 6 Lower qualities are heated to 725-850 degrees F (400-450 degrees C) to change them to the desired, permanent aquamarine blue. Higher heat will lead to discoloration. Colors can also be improved with neutron and gamma irradiation, but these changes do not last. - Walter Schumann, Gemstones of the world, 2001, p 90
Aquamarine Simulants
Blue topaz: trichroism (weak to none): colorless - (pinkish) - bluish; Chelsea: may appear yellowish-greenish, grayish, bluish, pinkish. Synthetic spinel and synthetic quartz: Chelsea: pinkish to red - Blue Chart Gem Identification, Herve Nicolas Lazzarelli, 2010, p 6
Synthetic Aquamarine
Synthetic aquamarine can be produced but is uneconomical. - Walter Schumann, Gemstones of the world, 2001, p 90
Physical Properties of Aquamarine
Mohs Hardness	7.5 to 8 Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Specific Gravity	2.65 to 2.76 Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references
Refractive Index	1.564 to 1.593 Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references
Optical Character	Uniaxial/- Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references
Birefringence	0.005 to 0.010 Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references
Pleochroism	Dichroism: colorless to greenish bluish - blue to sky blue. Greenish-blue stones - distinct: yellowish-greenish - blue-green Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
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