Discover P.J. Joseph's blog, your guide to colored gemstones, diamonds, watches, jewelry, art, design, luxury hotels, food, travel, and more. Based in South Asia, P.J. is a gemstone analyst, writer, and responsible foodie featured on Al Jazeera, BBC, CNN, and CNBC. Disclosure: All images are digitally created for educational and illustrative purposes. Portions of the blog were human-written and refined with AI to support educational goals.
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Wednesday, February 28, 2007
Joban Oil
Nearly all emeralds are treated with a liquid or resin after cutting. In India, Joban oil (green) is the choice for treating commercial grade emeralds. The treaters believe the oil improves the overall gemstonality of the emeralds. All treatments should be disclosed at all levels of the distribution chain. If you are doubtful have it checked by a reputed gem testing laboratory.
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