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GIA Knowledge Sessions Webinar - recorded live on September 30, 2021.
From star sapphires to opals to alexandrites, phenomenal gems are nothing short of, well, phenomenal! They each have special properties that allow them to interact with light in an unusual way, causing them to display effects such as asterism, play-of-color and color change. Journey along with GIA researchers Aaron Palke and Ziyin Sun as they dive into the science and mystery of phenomenal gems, nature’s rock stars.
Read more of Dr. Aaron Palke's research:
www.gia.edu/ge...
www.gia.edu/ge...
www.gia.edu/ge...