- Roger Dery
- The Gem Cutter
- June Stahl
- Jewelry Consumer
- Gichuchu Okeno
- Mine Owner / Gemstone Broker
- Charles Carmona
- World Bank Gemology Consultant
- Mark Schneider
- The Jewelry Designer
- Monica Stephenson
- Jewelry Fashion Editor
- Sune Merisheki
- Tanzanite Mine Owner
- 'Sigi' Johnstone Karanja Githii
- Mine Manager
- Elijah Mwandoe
- County Exec. for Mining
- Edward Omito
- Geologist
- Ginger Dery
- Owner, Spectral Gems
- Dave McConnell
- Owner, The Kings Jewelers
- Danuta Kuc
- Jewelry Consumer
- Orin J. Mazzoni Jr.
- Owner, Orin Jewelers
- Peter Salla
- Founder / Executive Director, The Arusha School
- Nancy Schuring
- Founder, Devon Foundation
- Hayley Henning
- Executive Director, Tanzanite Foundation
- Richard Drucker
- President, Gemworld & The Guide
- Doug Hucker
- CEO, AGTA
- Joseph DuMouchelle
- President, Joseph DuMouchelle Auction House
- 'Buddha' Daniel Muya Githii
- Miner
- Jamal Mbarak
- Gemstone Broker
- Gabriel Mcharo
- Mine Owner
- Pia Merisheki
- Founder, The Kitarini School
- Isaac
- Maasai Tribesman
- Rachel Dery
- Gem Mine Finder
