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Aquamarine An aquamarine is a blue-green beryl, which
is a silicate of beryllium and aluminum. The color of the stone is influenced
by the amount of iron in the silicate. Typical crystal structure is hexagonal
in nature and has hardness between 7.5 and 8. The gem found mainly in pegmatites. Aquamarines can be found in Another type of beryl is the green emerald.
This stone's color is influence by the amount of Chromium in the silicate,
not the amount of iron, as is the case with an aquamarine. |
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