Learn About Sapphire
Sapphires were already known in the 2nd century on the island of Srilanka and by the 4th and 5th century, active international trade was taking places. Its Sapphire mines are thus considered the oldest in the world. It has been home to many of the world’s most famous sapphires, including the 563 carat Star of India, and the 423 carat Logan sapphire.Sapphires are mined from alluvial deposits or from primary underground workings.
Properties of Sapphire
Sapphire is a precious gemstone, a variety of the mineral corundum, consisting of Aluminium Oxide (α-Al2O3) with trace amounts of elements such as Iron, titanium, chromium, vanadium, or magnesium. Sapphire is one of the two gem-varieties of corundum, the other being ruby (defined as corundum in a shade of red).
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Sapphire Price factors
Sapphire prices are depends on size, color, clarity, cut and overall quality. Completely Untreated Sapphires are more worth than treated sapphires. Geographical Origin of the sapphire also impact on price.
Sapphires can be treated by several methods to enhance and improve their clarity and color. It is common practice to heat natural sapphires to improve or enhance their appearance.This is done by heating the sapphires in furnaces to temperatures between 800 and 1,800 °C (1,470 and 3,270 °F) for several hours, or even weeks at a time. Rubies and Sapphire are often found in the same geographical settings, but they generally have different geological formations.Every sapphire mine produces a wide range of quality, and origin is not a guarantee of quality.
Sapphires are found in : Srilanka, Madagascar,Mozambique, Myanmar (Burma), Nigeria, Rwanda, and Tanzania. Different geographical locations have different appearances or chemical- impurity concentrations, and tend to contain different types of microscopic inclusions in sapphire.
Sapphires can be treated by several methods to enhance and improve their clarity and color. It is common practice to heat natural sapphires to improve or enhance their appearance.This is done by heating the sapphires in furnaces to temperatures between 800 and 1,800 °C (1,470 and 3,270 °F) for several hours, or even weeks at a time. Rubies and Sapphire are often found in the same geographical settings, but they generally have different geological formations.Every sapphire mine produces a wide range of quality, and origin is not a guarantee of quality.
Sapphire Colors
It is typically blue, but natural “fancy” sapphires also occur in yellow, purple, orange, and green colors; “parti sapphires” show two or more colors. Hue, Saturation and tone are the terms which describes the color of a gemstone. Hue is commonly known as the colour, Saturation refers to brightness and the tone is the lightness or darkness of the stone.Blue sapphire exists in various mixtures of its primary (blue) and secondary hues, various tonal levels (shades) and at various levels of saturation (vividness). If the sapphire color is not blue then it is called as fancy or party colored sapphire such as yellow, orange, green, brown, purple and violet.
“parti sapphires” show two or more colors. Although blue is the best-known sapphire color, they occur in other colors, including gray and black, and they can be colorless. A pinkish orange variety of sapphire is called padparadscha. Fancy sapphires are less available than blue sapphires. But fancy includes rainbow of color options which people can make romance with the gemstones. In the 1990s, discoveries in East Africa and Madagascar brought fancy sapphires widespread recognition.
So these are few interesting facts about Sapphires. We hope you would have enjoyed reading this article. Learn and buy gemstones in Canada,Montreal from visiting our website Bijouterie et Joyaux International Inc
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