We were the first test partner of the Emerald Paternity Test, the first Provenance Proof technology with the Gübelin Gem Lab in Switzerland in 2017. This uses nanotechnology to mark gems with an invisible imprint that gives their mining location, miner and mining period.
Our highest quality emeralds from the Kagem mine (in Zambia) are coded with this technology before going to auction. The imprint can withstand emerald treatments and the cutting process and can be accessed at any stage of the supply chain, proving provenance and boosting consumer confidence.
In November 2019, we married this advance with Gübelin Gem Lab’s blockchain technology at our high-quality emerald auction. The following month, we became the first miner to upload large quantities of rubies to the blockchain, providing a next step towards the goal of full transparency.