There's a field of academic study that sits at the intersection of geology and fashion, and that's gemology: the study of gemstones. Identifying, categorising and grading gemstones is a specific skillset, but valuation can be more subjective, particularly when it comes to regional variances such as with the inordinate popularity of jade in China.
Christina Chao is a gemologist and jewellery designer in Shanghai, who is passionate about translating the science of gems into the art of jewels. And as she describes in today's episode, that's a skill she often puts into practice when advising nervous men looking for engagement rings for their girlfriends. Or indeed nervous podcasters who don't know the first thing about gemstones.
![The Gemstone Buff (s03e20: Christina CHAO, Gemologist)](https://bts-image.xyzcdn.net/aHR0cHM6Ly9mZGZzLnhtY2RuLmNvbS9zdG9yYWdlcy84MWVjLWF1ZGlvZnJlZWhpZ2hxcHMvMUMvOTIvR0t3UklSd0lLdF9CQUFvWVp3SVgtbjFwLmpwZWc=.jpeg@small)
![Mosaic of China 英语脱口秀](https://bts-image.xyzcdn.net/aHR0cHM6Ly9mZGZzLnhtY2RuLmNvbS9ncm91cDcxL00wNy83Qi8xOS93S2dPejE0cXhILWl0VVpsQUFTeDU1R3JLV2M3MTIuanBn.jpg@small)
The Gemstone Buff (s03e20: Christina CHAO, Gemologist)
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