Determining and reporting the colour of some sapphires continues to pose a unique challenge for gem scientists and jewellers alike.
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Most working in the industry are aware sapphires are routinely treated to increase their marketability. What many dealers, manufacturers, and retailers may not be aware of, however, is a relatively new treatment used to beautify unattractive sapphire: high pressure, high temperature (HPHT).
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Whether you have 10 years of experience in the business, 30, or even two, at some point you have probably found yourself in front of a customer having a hard time coming up with natural options for gemstones that fit his/her budget, taste, and dreams.
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Demand is strong for timepieces and sapphire jewellery, if the results of Dupuis Fine Jewellery Auctioneers’ latest sale are anything to go by.
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When I joined a small group of gem dealers and researchers embarking on an adventure to Mandalay and the magical mining area of Mogok in Myanmar, I couldn’t help but share in the sentiments of Rudyard Kipling’s famous poem, “Mandalay.”
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Collectively forming the world’s largest showplace for gems and jewellery, the twin shows recently organized by HKTDC attracted record numbers of exhibitors and buyers.
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The Swiss Gemmological Institute (SSEF) has analyzed many sapphires ranging from five to 50 carats originating in the Bemainty/ Ambatondrazaka region of Madagascar.
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For most, this is the stuff of dreams. For some, it could be reality. Christie’s Magnificent Jewels auction will take place in Geneva this November.
Some of the show-stopping diamonds being auctioned include: Miroir de l’amour diamond earrings—the world’s largest pear-shaped, D-flawless diamonds with symmetrical cut (each weighing more than 50 carats); Le jardin d’Isabelle diamond necklace weighing a total of 140 carats; and an exceptionally rare, fancy vivid, pear-shaped pink diamond with no trace of … Continue reading Magnificent Jewels auction to be held in November
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Swiss-based Gübelin Gem Lab and Swiss Gemmological Institute (SSEF) are harmonizing their standards for the colour terms ‘pigeon blood red’ and ‘royal blue.’
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When we see the sparkle of a beautiful sapphire or other gemstone in a piece of jewellery, the thought of where it came from doesn’t usually enter our minds. A recent tour of gemstone mines in Sri Lanka following International Colored Gemstone Association’s (ICA’s) 2015 Congress, however, gives new meaning to what’s behind the term ‘mine to market.’
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