Green gemstones, which can uplift and heal our spirits, have been popular gem choices ever since we began to adorn ourselves with jewellery.
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This section, from the Spring 1991 issue of Gems & Gemmology, is a compilation of interesting finds from GIA’s laboratories.
Read MoreThe term "alexandrite effect" refers to the apparent change of colour in certain minerals from blue-green or greenish violet in daylight to red or reddish violet in incandescent light.
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