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Blue sapphire is typically cut in cushion, round, oval emerald shapes to retain the carats and the color. Other popular cuts are pears, briolette, hearts, and marquises Although sapphires are found around the globe, not all countries produce the colors that are highly valued. Australia being the dominant producer of sapphires the stones considered to be less valuable due to very dark color concealing the true beauty of the stone. The distinguishing feature of the Sri Lankan Blue sapphire is the low iron content giving color and the ability to Florence under ultra violet light. Low iron gives brighter and translucent magnificent color to the stones.
BLUE SAPPHIRE
BLUE SAPPHIRE
Although blue is the color most widely identified with sapphires, the color of sapphire can range from blue to light blue, and intermediate hues are known as fancy sapphires. Sri Lanka is the top source of finest Ceylon Sapphires to the global market and exports Ceylon Blue
Corundum containing a repeating structure of aluminum (Al2 ) are colorless. The blue color difference is due to the contamination of titanium and iron. Contamination of Iron only will make the sapphire turn pale yellow. The process of color occurrence in the blue sapphire is called the intervalence charge transfer or cooperative transfer. Which means transferring an electron from one transition metal to another. When iron (Fe2+) and (Ti4+) occupy the adjacent sides of the corundum crystal the electron is transferred to form (Fe3+) and (Ti3+). This right amount of titanium and iron combining at adjacent will produce the deep vivid blue.
Navy Blue, Indigo, and twilight take the second and other ranks based on the taste of collectors and individuals.
BUY YOUR BEST BLUE'S HERE!
BUY YOUR BEST BLUE'S HERE!
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