If you’re searching for an energy-efficient diamond, you’ll need to think about how you define energy efficiency. If you’re strictly concerned with the amount of kWh consumed per carat, it would be wise to ask the diamond producer directly about the company’s energy usage.
However, there are other factors to consider. In terms of land disruption, natural diamonds require mining the earth. According to Clean Origin, nearly 100 square feet of land is disturbed for every naturally-mined carat of diamond. However, it’s worth noting synthetic diamonds are created in laboratories, which require construction on land and may also disturb natural habitats.
Additionally, many diamond companies have implemented sustainability initiatives regardless of whether they produce natural or synthetic diamonds. Tiffany & Co., perhaps the world’s most recognized diamond company, helped launch the Initiative for Responsible Mining Assurance (IRMA) in 2006. Further, Tiffany & Co. launched the Diamond Source Initiative last year, which provides information about the origin for each individually registered diamond.
There’s also the Kimberley Process (KP), which works to minimize the presence of conflict diamonds. Conflict-free diamonds are ethically mined and sold, abide by human rights laws, and do not have ties to terror organizations. To meet the KP standards, participants must satisfy national import/export controls and requirements, commit to transparent practices, trade only with other KP participants, and prove their diamonds are conflict-free. Today, KP participants account for 99.8 percent of the global diamond trade.