Hellow guys, Welcome to my website, and you are watching CEO of GSI, Mark Gershburg: Interviewed by The New Jeweller Group at IIJS Mumbai 2016. and this vIdeo is uploaded by Gemological Science International (GSI) at 2016-08-24T03:49:13-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.