With women miners, Pact & partners build an ethical gemstone supply chain from the ground up

When the Gemological Institute of America approached Pact’s Cristina Villegas in 2016 about piloting a rough gemstone guide for miners, Villegas…

Working Toward Mercury-Free Gold Mining - Bario Neal

The climate case for a career in mining

Sustainability, Free Full-Text

Cristina Maria Villegas on LinkedIn: With women miners, Pact

What Is Ethical And Sustainable Jewelry? An Industry Deep-Dive

Ethical Sapphires: What Are They & How We Source Ours - Gem Breakfast

Responsible gemstones mining - ORIGEN - Gold for Future

Digging Into Artisanal and Small-Scale Mining - JCK

The good gem guide