A new traceability technology creating independent proof of provenance for emeralds.

The Emerald Paternity Test is a true game-changer for the coloured gemstone industry. This new technology uses customised DNA-based nanoparticles enabling traceability of emeralds back to the exact place of mining.

This breakthrough technology uses DNA-based nanoparticles that are applied directly at the mine, onto the rough emerald crystals. Developed specifically to survive the usual procedures, which an emerald undergoes before reaching the end consumer (such as cleaning, cutting, polishing, transportation, setting), the nanoparticles can be retrieved and decoded at any stage along the supply chain. This technology offers miners (both big corporates and cooperatives of small and artisanal miners), governments, trade organisations, industry watchdogs, jewellery brands and final customers a completely new level of transparency when sourcing emeralds, instilling confidence and creating trust.

The Gübelin Gem Lab invited Gemfields, a leading producer of responsibly sourced coloured gemstones, to join the project as a test partner. Gemfields is the majority owner of Kagem, the world’s largest emerald mine and thanks to Gemfields’ already robust supply chain and established standards of responsible sourcing, they were chosen to help provide the testing conditions for the technology in the field.