Colombia is home to a rainbow of gems, but emeralds – and the tales of lore that surround them – are the country’s most well-known treasures.
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Circumnavigate the boreal reaches of the globe to explore gems from polar regions.
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A look at the mining and distinguishing characteristics of this naturally vibrant blue sapphire.
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Documents a series of visits to Myanmar in search of exceptionally bright pinkish red spinels possessing no dark tones.
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Natural pearl identification is one of the critical problems in pearl research. The DNA study of pearly molluscs and oysters facilitates the solving of this problem. To fulfil this goal, GIA sent a group from both Research and Education to Tennessee to sample the freshwater molluscs for DNA bar-coding. Come with us to Camden, Tennessee, to see how we dive for pearly shells.
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Fossicking is a special type of mining activity that Australians love. Australia is a large country rich in many gem resources. Come to Australia with the GIA field gemmology team to feel the passion of gem fossicking in the southern hemisphere.
Read MoreSince late 2007, rubies and sapphires have been mined by hand methods from both eluvial and primary deposits at Winza in central Tanzania.
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A preliminary report on blue sapphires from a new deposit in Nigeria's Mambilla Plateau.
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The past decade saw some impressive discoveries of diamonds and coloured stones.
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Join GIA field gemmologists and witness firsthand the entire value chain of the Sri Lankan coloured gemstone and jewellery industry, from digging for sapphire in the mud to the glamour of finished jewellery on a fashion model.
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