Color types such as "pigeon's blood," "Paraíba" and "cobalt blue" have become wildly popular in the gem trade. But there is a vast difference between coining such terms and applying them in a way that is both consistent and logical.
What is the finest blue, or the finest red? In truth, there is no finest color; that is a personal preference for each of us. But on social media, there is no shortage of pundits pontificating on the “proper” color description of a gem, even when they have only seen a photo of a photo of it.
Learn more about this topic by Richard Hughes as seen on lotusgemology.com.
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