https://www.instagram.com/brichardson0331/ See Part 2 here with the Presidium Multi Tester 3- https://www.youtube.com/watch?v=SvSCpNt_zGM&lc=z225zztx4xaovxxjl04t1aokg0yqidduiiqkgyb0o2pork0h00410 Diamond Testing Icebox and Trax NYC Diamonds Diamond Selector 2