October 31 through November3—SAN DIEGO, CALIFORNIA: Annual show; JOGS Sand Diego Gem & Jewelry Show; San Diego Convention Center, Daily 10-5, Sun. 9-3; Registered Buyers: FREE - General Admission - $20 - Proof of Military: FREE - Children: No Children under 14 will be admitted; JOGS San Diego Gem & Jewelry Trade Show is the leading West Coast gem and jewelry trade event perfectly timed for buyers looking to restock for the busy holiday season.
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 Post subject: Nigerian Emeralds: Buyers Beware
PostPosted: Mon Jul 03, 2023 10:25 pm 
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Joined: Sun Oct 16, 2005 12:22 pm
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Location: San Francisco
Recently several emeralds have been submitted to my lab, both rough and fashioned. They were all represented as as "No Oil. No Resin. No treatment", mined in Ethiopia.
Scanning with GemmoRaman verified they were all natural emeralds.
EXA revealed the presence, minimally, of oils and often accompanied with resin peaks. 100% showed added fillers.
FTIR scans showed a plethora of various fillers, both naturally occurring oils with resins galore.
Examples:


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