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Sapphire is a gemstone, a variety of the mineral corundum, an aluminium oxide It is typically ... Blue sapphires with up to 15% violet or purple are generally said to be of fine quality. ..... Neal; The production and identification of artificial precious stones in Annual Report of the Board of Regents of the Smithsonian Institution, ...


For example, green Sapphire was called "Oriental Emerald". The practice of applying the name of a different gemstone to identify the sapphire was misleading, ...


Apr 13, 2015 ... Purple Sapphires are the least well known sapphire varieties and the ... Take A Look At Our Identification Chart For Indications Of Treatments ...


One way to identify a crystal species is by taking a refractive index test. ... Sapphires are mined heavily in gem producing countries, by traditional and ... more than 15% secondary color tones within the stone such as yellow, green or purple.


Dec 23, 2006 ... Read about sapphire gems and jewelry at Gemselect. ... color-specific names, such as yellow sapphire, green sapphire or purple sapphire. ... Identifying Sapphire; Sapphire Origin; Buying Sapphire; Sapphire Gemological ...


Sapphire is one of the Big 3 of jewelry colored gemstones—the other two are ruby ... Purple sapphires are similar in color but darker and always have purple as ...


Everything you ever wanted to know about sapphire gems. ... Colorless, white, gray, blue, blue-green, green, violet, purple, orange, yellow, yellow-green, brown, golden amber, .... Inclusions can also help identify the source of a sapphire.


Loupe clean sapphires require microscopic examination in order to identify the nature and ... A top color 1-carat purple sapphire may cost as much as $570.


Sapphire, a member of the corundum family of gems, exhibits a broad color range. Impurities in clear corundum tint the naturally colorless stone yellow, green, ...


In antiquity, any blue stone such as lazurite, was called Sapphire. .... orange, red- orangy, orangy-pink, pink-purple, hot pink, and padparadscha colour are beryllium treated. ... Herve Nicolas Lazzarelli, Blue Chart Gem Identification ( 2010).