Tiffany reveals where its diamonds come from. Waiting for Blockchains, geography can act as an ethical filter in the meantime - IGR - Italian Gemological Review
Largest uncut diamond in recent history found in Botswana mine - The Japan Times
Spring 2018 Gems Gemology PDF, PDF, Gemstone
Jeweller g&j (may 2014) by Zest Europe - Issuu
References - Agrarian Reform in Russia
LOKARATNA Folklore Foundation, Bhubaneswar, India
The Global investigative journalism casebook
World's second-largest diamond discovered in Botswana
Blockchain Technology Can Guarantee to Consumers 'That Their Diamonds Have Been Ethically Sourced' — Botswana President – Blockchain Bitcoin News
Sustainability, Free Full-Text
PDF) Examining Social Barriers to Open Source Appropriate Technology and Innovation through Collaboration with Information and Communication Technology
Calaméo - 100 GOOD IDEAS - part 1