Diamond World (DW) November- December 2020
Young & Resilient - 7 young diamantaires who are tiding through tough times & making the industry stronger | Gem & Jewellery Industry shine with Increase in exports | A Stellar Surprise Louis Vuitton's high jewellery collection. | 10th JJS IJ Award , Jonna Hary, Richa Singh (NDC) & much more Young & Resilient - 7 young diamantaires who are tiding through tough times & making the industry stronger | Gem & Jewellery Industry shine with Increase in exports | A Stellar Surprise Louis Vuitton's high jewellery collection. | 10th JJS IJ Award , Jonna Hary, Richa Singh (NDC) & much more
GIA AdvertorIAl Stone Talk Zircon Zircon is the oldest mineral on earth, with specimens in Australia dating back 4.4 billion years. Because it is quite brilliant and has fire close to that of diamond, colourless zircon has been used as a natural diamond substitute until recent decades, but it is a beautiful gem in its own right. The way zircon breaks up light causes viewers to see double when looking into the stone, meaning that zircon doubles its own sparkle. Beloved throughout history, this gem was thought during the Middle Ages to aid sleep, drive away evil spirits, and promote wisdom. 84 | November-December 2020 | DiamonD WorlD
GIA AdvertorIAl Colour Zircon’s varied palette of yellow, green, red, reddish brown and blue makes it a favourite among collectors and consumers alike. Blue is the most popular and valuable colour. Green and red are among the rarest colours in natural zircon. Clarity Untreated zircon can have a cloudy or smoky appearance and it sometimes contains long parallel inclusions that create a cat’s-eye effect when the stone is cut into a cabochon. Treatments Brownish zircon can be heated to become colourless, yellow to orange (sometimes called golden), red or blue. Although zircon in these colours does exist in nature, these colours are rare. It is safe to assume that most colourless, red and blue zircon has been heat treated. Sources Some of the finest zircon comes from Madagascar, but this gem is also found in the United States, Canada, Cambodia, Myanmar, Vietnam, Sri Lanka and Australia. To learn more about zircon and other popular gemstones, visit GIA.edu/gem-encyclopedia This This article is is provided by by GIA GIA (Gemological Institute of of America). GIA.edu Images Images Courtesy Courtesy of: Cenki of: Cenki Thomas, Thomas, W. W. Constantin Wild Wild & Co., & Co., Gerry Gerry Manning Manning Learn More About GIA Education Programmes and Laboratory Services in in India GIAindia.in Email: labindia@gia.edu Email: eduindia@gia.edu DiamonD WorlD | November-December 2020 | 85 12/30/19 3:06 PM 11/9/18 11/9/18 12:47 12:47 PM PM
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GIA AdvertorIAl<br />
Colour<br />
Zircon’s varied palette of yellow, green, red, reddish<br />
brown and blue makes it a favourite among<br />
collectors and consumers alike. Blue is the most<br />
popular and valuable colour. Green and red are<br />
among the rarest colours in natural zircon.<br />
Clarity<br />
Untreated zircon can have a cloudy or smoky appearance<br />
and it sometimes contains long parallel<br />
inclusions that create a cat’s-eye effect when the<br />
stone is cut into a cabochon.<br />
Treatments<br />
Brownish zircon can be heated to become colourless,<br />
yellow to orange (sometimes called golden),<br />
red or blue. Although zircon in these colours does<br />
exist in nature, these colours are rare. It is safe to<br />
assume that most colourless, red and blue zircon<br />
has been heat treated.<br />
Sources<br />
Some of the finest zircon comes from Madagascar,<br />
but this gem is also found in the United States,<br />
Canada, Cambodia, Myanmar, Vietnam, Sri Lanka<br />
and Australia.<br />
To learn more about zircon and other popular<br />
gemstones, visit GIA.edu/gem-encyclopedia<br />
This This article is is provided by by GIA GIA (Gemological Institute of of America).<br />
GIA.edu<br />
Images Images Courtesy Courtesy of: Cenki of: Cenki Thomas, Thomas, W. W. Constantin Wild Wild & Co., & Co., Gerry Gerry Manning Manning<br />
Learn More About GIA Education Programmes and Laboratory Services in in India<br />
GIAindia.in Email: labindia@gia.edu Email: eduindia@gia.edu<br />
DiamonD WorlD | <strong>November</strong>-<strong>December</strong> <strong>2020</strong> | 85<br />
12/30/19 3:06 PM<br />
11/9/18 11/9/18 12:47 12:47 PM PM
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