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Blog

  • 4th Nov 2016

    Carat vs Karat - what's the difference?

    The term “carat” (abbreviated ct.) is associated with gemstones. The term karat (abbreviated K or kt.) is associated with the amount of pure gold in a gold alloy . A carat is strictly a mea…

    Published by Gordon Weller GIA GG

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  • 7th Oct 2016

    California wine country visit of January 2016

    Our most recent visit to California wine country was January 2016. The trip was built around my wife and sister’s birthdays, and  Chateau Montelena winery’s House Party Five. On our 2015 vi…

    Published by Gordon Weller GIA GG

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  • 8th Sep 2016

    Our second trip to California wine country.

    January 2015 marked our second trip to California wine country and Napa Valley . Our daughter spearheaded the trip because of a San Francisco business trip she had, which coincided with my…

    Published by Gordon Weller GIA GG

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  • 1st Sep 2016

    First trip to California wine country

    California wine country has become one of our favorite domestic travel destinations in recent years. We made our first of three trips in late September, 2013. My wife and I enjoy a nice glass of win…

    Published by Gordon Weller GIA GG

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  • 10th Aug 2016

    Surface coating of gemstones explained

    Gemstone Coating aka Surface Coating or Surface ModificationCoating (aka surface coating or surface modification) gemstones is a treatment technique which dates back hundreds of years. Its purpose…

    Published by Gordon Weller GIA GG

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  • 18th Jul 2016

    Irradiated gemstones: Are they safe to wear?

    Gem treatments have become increasingly sophisticated over time. In the early 1900’s, experiments were conducted with electromagnetic radiation and bombardment of gemstones with subatomic particles…

    Published by Gordon Weller GIA GG

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  • 15th Feb 2014

    Gemstone treatments/enhancements explained

    Although cutting and polishing a gemstone are the most basic forms of enhancement used to fully display the beauty of a gemstone, man has developed numerous treatments and methods to improve upo…

    Published by Gordon Weller GIA GG

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