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www.minerals.net/mineral/aquamarine.aspx

Aquamarine is the greenish-blue to blue variety of Beryl.It forms in beautiful crystals that can be quite large and totally transparent. Unlike Emerald which usually is flawed or heavily included, Aquamarine can form in stunning flawless crystals, creating some of the most beautiful mineral masterpieces. Duller or greenish colored stones can be heated to very high temperatures in which they ...

www.minerals.net/gemstone/aquamarine_gemstone.aspx

Aquamarine, named for the Latin phrase "water of the sea", is the blue to blue-green variety Beryl.Beryl also contains other gem varieties, including Emerald, and some lesser known varieties such as Morganite and Heliodor.Aquamarine ranges in color from a faint light blue to blue and bluish-green, with lighter colored stones being the more common type.

geology.com/minerals/beryl.shtml

What is Beryl? Beryl is a relatively rare silicate mineral with a chemical composition of Be 3 Al 2 Si 6 O 18.It is found in igneous and metamorphic rocks in many parts of the world.. Beryl has served as a minor ore of beryllium, and color varieties of the mineral are among the world’s most popular gemstones.Emerald, aquamarine, heliodor, and morganite are the most well-known varieties of beryl.

mineralminers.com/html/aqumins.stm

Aquamarine mineral specimens and crystals at mineralminers.com: your on-line link direct to the aquamarine mines for natural aquamarine mineral specimens and aquamarine crystals mined at locations around the world.

www.gia.edu/aquamarine/buyers-guide

Although aquamarine is the mineral beryl, like emerald, inclusions are much less accepted than they would be in emerald. Aquamarine that is milky or included is much less expensive, although it may be beautiful in its own way. 2. If it seems too good to be true, it probably is.

www.gia.edu/aquamarine

Aquamarine Gemstone is the green-blue to blue variety of the mineral Beryl. It is known to be large in size & well-formed, making it particularly valuable.

en.wikipedia.org/wiki/Beryl

Beryl (/ ˈ b ɛr əl / BERR-əl) is a mineral composed of beryllium aluminium cyclosilicate with the chemical formula Be 3 Al 2 Si 6 O 18. Well-known varieties of beryl include emerald and aquamarine.Naturally occurring, hexagonal crystals of beryl can be up to several meters in size, but terminated crystals are relatively rare. Pure beryl is colorless, but it is frequently tinted by ...

www.crystalvaults.com/crystal-encyclopedia/aquamarine

Aquamarine is the traditional birthstone of those born in March. Aquamarine Natural Birthstone. Pale blue Aquamarine is one of the true birthstones of those born as the world awaits the vernal equinox and spring (February 19 - March 19). This is a time when new life is about to burst forth, a time of faith and trust.

www.gemselect.com/gem-info/aquamarine/aquamarine-info.php

Aquamarine, and other types of beryl are quite durable and hard, ranging from 7.5 to 8 on the Mohs scale of mineral hardness. A dark and deeply saturated blue is the most desirable and valuable aquamarine color. Other varieties of beryl include morganite, goshenite, golden beryl , green beryl and bixbite. Aquamarine can typically be identified ...

www.mindat.org/min-289.html

Jana Fridrichová, Peter Bačík, Petra Rusinová, Marcel Miglierini, Valéria Bizovská, Peter Antal (2014): Crystal-chemical effects of heat treatment on aquamarines and yellow beryl from Thanh Hoa Province, Vietnam. 4th Central European Mineralogical Conference, Skalský Dvůr, Czech Republic, 23-26 April 2014, Abstract Volume, 39.