| Agroya, Naresh | The Emerald shop | Proprietor |
| Angarita Sarmiento, Fernando | CI THE BEST EMERALDS SA | |
| Angarita Sarmiento, Ronald Michael | Cl THE BEST EMERALDS SA | |
| Baquero, Oscar | Fedesmeraldas | Presidente Ejecutivo |
| Basaglia, Elena | Gemfields | Downstream Manager |
| Bello Rodríguez, Emilce | | |
| Bilgore, Jeffrey | American Gem Trade Association | President |
| Burlakov, Alexey | Tsarina Jewels | |
| Carmona, Andrew | | |
| Carmona, Betty | | |
| Carmona, Charles | Guild Laboratories, Inc. | President |
| CHALAIN, JEAN PIERRE | SSEF | Director Diamond Department - |
| Chiquillo, Allan | C.i. Century Exportaciones | |
| Choudhary, Gagan | Gem Testing Laboratory (GJEPC, India) | Deputy Director |
| Coates, Jonathan | Hexa Resources LTD | Senior Geologist |
| Davila, Maria | TASART. ARTE Y ANTIGÜEDADES S.L | Director |
| DELAUNAY, AURELIEN | LABORATOIRE FRANCAIS DE GEMMOLOGIE | DIRECTOR |
| Didier, GIARD | Association Française de Gemmologie | President |
| FORTALECHE, DARWIN | Guild Gem Laboratories | Chief Gemologist HK |
| Gacharna Gacharna, Nelson | Green Power Mining Colombia SAS | Shareholder |
| Gacharna Gomez, Juan Eduardo | Green Power Mining Colombia | |
| Gacharna Gomez, Lina | Green Power MIning Colombia | |
| Garzon, Hector | Green Power Mining Colombia sas | Administrador |
| Giraldo, Rodrigo | RG Gemlab | Director |
| Gomez Restrepo, Andrea | MEZEM Fine Jewelry | |
| GOUBERT, David | Boreal Gemstones Company | |
| Goyal, Richa | STIC | DIRECTOR |
| Guo, Jia | Beso SAS | subgerente |
| hackman, afshin ( alan ) | Intercolor USA | Vice president |
| han, yang | Shanghai WanBao ShangLian e-Commerce Co., Ltd. | CTO |
| Harris, Christopher | Hexa Resources LTD | Director |
| Hirsh, Jason Paul | Hirsh London | Director |
| Jaén, Marian | Jewelry and Gem Appraisals | Jewelry Gem Appraisals |
| Keswani, Lalta | LALTA NYC | Owner |
| Leake, Martin | DMCC | Special Advisor - Precious Stones |
| Lianhua, Wu | Shanghai Moni Jewelry | President |
| LIU, RUBY | Guild Gem Laboratories | President |
| Lopez Diaz, Samuel | Grupo Empresarial Minero | CEO |
| Martínez, Lucie | Lm jewellery | |
| Mekonnen (Guest 01), Addise | | |
| Mekonnen (Guest 02), Addise | | |
| Mekonnen, Addise | Geologist | Halo emerald mine |
| Menzie, Joseph | Joseph Menzie Inc | President |
| Mesa Mejía, Lucas | | |
| Molinares, Luis | 3c colombia emeralds ci sas | Gerente General |
| MONTEFORTE SPECCHI, JACOPO | CERTILINE srl | CMO |
| Morales, Andrea | CDTEC | |
| Moreno, Luis Guillermo | | |
| Ng, Pearl | Pearlybypearl | Director |
| Osorio, Jaid | ARCOIRIS GAMES | |
| Pachón Lopez, Diana Cristina | | |
| Palmeri, Aureliano | PULOWI LTDA. | GEMAS DE AURELIANO & MELVA |
| Palomeque, David | TFC Diamonds Florida | CEO |
| Pardieu, Vincent | VP Consulting | Owner |
| Piat, Emmanuel | DANIEL H PIAT | Owner |
| Pineda Diaz, Neyla María | Asocoesmeral | |
| Pinilla, Jaime | MINERIA INTEGRAL DE COLOMBIA SAS MININCOL | Gerente |
| Poddar, Vaibhav | Avp trading corporation | Purchase manager |
| Popat, Pratish | J K Gems & Jewellery Pvt Ltd | Director |
| Qian, YueyiI | Feng Yi Jewellery | Executive Director |
| Reif, Stephan | MRD GmbH | Managing Director |
| Roa Rodríguez, Rodrigo | | |
| Robayo, Adriana | Hexa Resources SAS | Geologist |
| Rotlewicz, Paul | C. I. Gemtec SAS | Sub Gerente |
| Salamanca, Lina | Villas Artes SAS Brazil | |
| Salazar Delgado, Germán | C.I. German Salazar D.E.U. | Presidente |
| Scarratt, Kenneth | Bahrain Institute for Pearls & Gemstones (DANAT) | Chief Executive Officer |
| SHAH, VIPULKUMAR NAVICHANDRA | PADMAVATI DIAMONDS CO.LTD | DIRECTOR |
| Smith, Brian | University of Nantes, DUG | |
| Strutt, Algy | Gemfields Ltd | Manager - Projects |
| Trivier, Adrien | Adrien Trivier | Self employed |
| Ulloa Rodríguez, Andrés | | |
| Ulloa, Néstor | Esmeraldas de Coscuez Ltda | Socio |
| VACCA, LUZ MARY | GREEN POWER MINE COLOMBIA | Gerente |
| VYAS, VINOD | Color Rocks | DIRECTOR |
| Yanes, Jesus | HE YANES SL | |
| Yu, Rong | | |
| Zajicek, Monte | Equatorian Imports | Director |
| Zwaan, Johannes Cornelis | Netherlands Gemmological Laboratory | Director |
