Carlsbad Newswire

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Results 1 - 9 of 9 for "u:diamonds.net" in Carlsbad, CA

  1. Labs Refute Claims HPHT Escaping DetectionRead the original story

    Wednesday Apr 25 | Diamonds.net

    Major gemological laboratories have rebuffed claims that detection machines are failing to spot synthetic diamonds that have undergone irradiation. In a trade alert last week, Diamond Services argued that the treatment, generally used to alter the color of a stone, can mask the phosphorescence effect when diamonds created using High Pressure-High Temperature undergo scanning at room temperature.

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  2. GIA Spots Synthetic Ruby Layer on Natural StonesRead the original story

    Mar 19, 2018 | Diamonds.net

    Attempts to upgrade the size and color of gemstones using a layer of synthetic material have been around for decades, but signs indicate the techniques are changing. The Gemological Institute of America recently received two loose, oval-shaped, mixed-cut, red stones at its New York laboratory.

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  3. GIA Spots Moissanite Posing as Rough DiamondRead the original story

    Feb 11, 2018 | Diamonds.net

    The Gemological Institute of America has identified a synthetic moissanite stone that had been submitted to one of its laboratories as a natural rough diamond. The GIA's Carlsbad lab recently examined the 9.71-carat stone, whose shape was similar to an octahredron, staff gemologist Rebecca Tsang wrote in the Winter 2017 edition of the institute's journal, Gems & Gemology .

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  4. Synthetics Dominate Top 10 Stories of the YearRead the original story

    Dec 21, 2017 | Diamonds.net

    Global news followers will likely remember 2017 as the year of sexual-harassment claims, the fall of Robert Mugabe, and Donald Trump's entry into power. But many in the diamond trade had their minds focused on topics far closer to home, judging by what they were clicking on this year.

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  5. Synthetics Dominate Top 10 Stories of the YearRead the original story

    Dec 21, 2017 | Diamonds.net

    Global news followers will likely remember 2017 as the year of sexual-harassment claims, the fall of Robert Mugabe, and Donald Trump's entry into power. But many in the diamond trade had their minds focused on topics far closer to home, judging by what they were clicking on this year.

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  6. GIA Finds Synthetic Diamond with Forged InscriptionRead the original story

    Nov 13, 2017 | Diamonds.net

    Fraudsters forged a Gemological Institute of America inscription on a synthetic diamond to make it appear that the stone was the true bearer of a natural-diamond grading report, the institute said. The engraving on the polished diamond's girdle contained a genuine GIA report number for a mined diamond the institute had graded in 2015, the laboratory explained.

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  7. GIA Opens Applications for $2M of ScholarshipsRead the original story

    Aug 2, 2017 | Diamonds.net

    The Gemological Institute of America is offering more than $2 million in scholarships for its 2018 education programs, the laboratory said Monday. Scholarships are available for online distance-learning courses and for classes at the GIA's campuses in Bangkok, Carlsbad, Hong Kong, London, Mumbai, New York and Taiwan, as well as at the GIA branch in Dubai.

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  8. GIA Finds Baffling Flaw in CVD DiamondRead the original story

    Jul 2, 2017 | Diamonds.net

    The Gemological Institute of America doesn't usually declare itself stumped, but a recent discovery of a flaw in a synthetic diamond that's almost always associated with natural stones left scientists scratching their heads. Gemologists studying a round, brilliant-cut, 0.26-carat, pink laboratory-grown diamond found a surprising "H4 defect" - a common characteristic of natural diamonds.

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  9. GIA Finds Baffling Flaw in CVD DiamondRead the original story

    Jul 2, 2017 | Diamonds.net

    The Gemological Institute of America doesn't usually declare itself stumped, but a recent discovery of a flaw in a synthetic diamond that's almost always associated with natural stones left scientists scratching their heads. Gemologists studying a round, brilliant-cut, 0.26-carat, pink laboratory-grown diamond found a surprising "H4 defect" - a common characteristic of natural diamonds.

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