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Event Calendar

Tuesday, November 10, 2020

WJA NY Metro | Microworld of Opals with Nathan Renfro

Start Date: 11/10/2020 5:00 PM EST
End Date: 11/10/2020 6:00 PM EST

Venue Name: ZOOM Meeting

Event Website:

Organization Name: WJA NY Metro Chapter

WJA NY Metro Chapter
Phone: (408) 391-2625

Microworld of Opals” with Nathan Renfro

Join us on November 10th at 5pm for a discussion on Opals with Nathan Renfro. 

This zoom talk will review interesting microscopic features in natural, treated synthetic and imitation opals. 

Bio: Born in western North Carolina, Mr. Renfro developed an interest in rocks and minerals in his teenage years going on to pursue and undergraduate degree in geology. While learning to cut gems, his interests focused on gem minerals and he subsequently completed his studies in gemology earning his GG from GIA in Carlsbad in 2007 and completing Gem-A’s FGA program in 2014.  Nathan Renfro is currently the Manager of Colored Stones at GIA with a focused interest in photomicrography and inclusion identification.