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name:
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Aquamarine
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| gemstone variety:
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Beryl
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| trade name 1:
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Aquamarine
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| trade name 2:
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Santa Maria Aquamarine
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| trade name 3:
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Santa Maria Africana Aquamarine
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| basic colour:
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blue
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Colour :
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pale, 'water like' blue to intense blue
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Quality :
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the more intense the blue colour, the more valuable
the stone. Facetted Aquamarines should be flawless with
balanced proportion is in the cut.
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History :
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The name is derivated from the Latin 'aqua' = water,
and 'mare' = sea. The term 'Santa Maria', which is actually
the name of an old mine in Brazil, today refers to the
finest and most intensive blue colour Aquamarines that in
our days are mined in Mozambique, Africa. The largest
Aquamarine crystal in gem quality ever found had a weight of
110 kg!
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Curiosities / Saga :
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The roman Emperor Nero used a clear, rolled Aquamarine
piece as a monocle.
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Countrys of Origin :
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Brazil, Mozambique, Nigeria and Afghanistan are the
main countries that mine Aquamarine commercially
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Birthstone :
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March - Aquamarine
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Hardness :
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7.5
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Treatment :
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none, sometimes heated
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Size :
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normally between 0.50 and 10.00 carats
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Specific gravity :
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2.65 - 2.75
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Chemical Composition Formula :
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Be3Al2 (SI6O18)
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Chemical Composition Name :
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beryllium- aluminium- silicate
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Crystal system :
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hexagonal
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Light refraction :
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1.570 - 1.590
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Double refraction :
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0.004 - 0.006
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