GIA London
Description
GIA - The world's foremost authority in gemmology providing professional education globally for the trade and public in gemmology and jewellery design. Education is provided Online and in our fully equipped classrooms in central London, from one day to six months. Further your professionalism and your career with GIA.
GIA London is one of the network of campuses, laboratories and research centres that GIA operates internationally from its headquarters in Carlsbad, California.
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Have you ever seen a white diamond? You’ll often hear the term “white” applied to colourless diamonds, but it's inaccurate. Learn more about white diamonds: http://bit.ly/2cUX8Rb Photo: Robert Weldon/GIA
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True or false: Only about 25% to 35% of diamonds exhibit fluorescence. Learn all the facts about diamond fluorescence on our blog: http://bit.ly/2r7e4gp Photo: Kevin Schumacher/GIA
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Two beautiful natural pearls that look nothing alike. Unlike the cultured pearls you are probably familiar with, the natural pearl on the left does not have nacre. Which of these unusual gems is your favourite? Photo: Sood Oil Chia/GIA. Courtesy: Sunghee Caccavo
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Purchasing a coloured gemstone? Be sure of its identity with a GIA Colored Stone Identification Report. The report not only identifies and describes the material, it also lists any detectable treatments. What's more, your gemstone's information and a PDF of the report are available online, 24/7, for easy reference and retrieval through GIA's Report Check. http://bit.ly/2qWWbAn Photo: Robert Weldon/GIA. Courtesy: Pala International
Graduate Gemologist Diploma Programme
GIA is now accepting applications for its Graduate Gemologist diploma programme in London. Apply now for the 15 June - 11 August programme. http://bit.ly/2pesWF4
The Allure of an Oval Diamond
What do the Koh-i-Noor, the Wittelsbach-Graff and the CTF Pink Star have in common? They’re all famous and they’re all oval diamonds. Learn what to look for before you shop for your own oval diamond. http://bit.ly/2qgxCeb
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The octagonal shaped Asscher cut became popular after World War I. It was designed by Joseph Asscher in 1902 and gained popularity during the Art Deco period. Would you wear this engagement ring style? Courtesy: 1stdibs
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Did you know some gemstones are more durable than others? Gemstones like sapphire, diamond and ruby are considered the most durable and are best for travel. Courtesy: Omi Privé
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Graded by GIA, the Apollo Blue and Artemis Pink fancy coloured diamonds sold at auction for $US57.4 million at Sotheby’s Geneva, a world record for earrings. At 14.54 carats, the Apollo Blue is the largest Internally Flawless, Fancy Vivid blue diamond ever to be offered at auction. The Artemis Pink, a 16.00 ct Fancy Intense pink diamond also sold to the same bidder. Courtesy: Sotheby's
Where Do Topaz and Citrine Come From?
Long confused with topaz because of its tawny colour, citrine is a transparent, pale yellow to brownish orange variety of quartz. Citrine that is an earthy, deep, brownish or reddish orange is especially popular. Its affordability and durability make it a favourite for consumers seeking a yellow-to-orange gem. Read more about citrine on our blog. http://bit.ly/2gKzngb Photo: Robert Weldon/GIA. Courtesy: Minerales y Metales del Oriente
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Congratulations to all the graduates of the Jewelery Design course (Mar–May 2017). Good luck to all of you!
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Ruby gets its colour from the trace element chromium. Did you know: The higher the amount of chromium corundum contains, the stronger the red colour? Check out these unheated rubies from Montepuez, Mozambique. Photo: Robert Weldon/GIA. Courtesy: Tommy Wu, Shire Trading Ltd., Hong Kong
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