Aquamarine – definition

The name of the “Aquamarine” comes from the Latin word ” Sea Water”. The aquamarine comes from the bottom of the sea, the voyagers of many countries use it to pray for the Sea God’s bless, addressing it as the Mascot Stone or Blue Topaz. The aquamarine, emerald and greenstone are all called the beryl, all of them are the transparent crystal. The beryl is a kind of silicate containing beryllium and aluminum, whose molecular formula is Be3Al2(Si6O18). The aquamarine is the beryl with the color from sky blue to ocean blue or the blue with green. The main reason why it is the color, because it contains minor Iron(Fe2+). The fine quality ones are those which are clear and pure, rich bright blue to light blue. In the mineralogy, it belongs to the hexagonal, the crystal shape we often see is the hexagonal prism, the next is the hexagonal bipyramid, the aggregation is often produced in the state of columnar. They are the glass gloss, from transparent to semi-transparent, the refractive index is 1.567~1.590, the birefringence is 0.005~0.007, the polychrome is transparent, taking on blue or blue green, the hardness is 7.5, the density is 2.68~2.80 gram/cm3, they won’t shine in the irradiation of X ray, the endurance is good.

That the purchase of the aquamarine mainly focuses on color, transparency and weight. It is the best if the aquamarine is dark color, glass gloss, few inclusions, pure, transparent, a weak dichroism and hexagonal crystal. The aquamarine is brittle, fear of high temperature, easy to bursting in high temperature, fading meeting with fire. You had better prevent from clashing and meeting with fire.

2x8mm Ocean Blue Sapphire Princess Earrings

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