This is often the reason why diamonds are so appealing, and if this reason were accompanied by a commitment to the environment, the colourful fire from the diamond would be even more dazzling. For every carat of lab made diamonds for sale, 2011 ounces of air and 127 gallons of water pollution are eliminated, and 250 tonnes of carbon footprint are reduced. Today's lab diamond have been certified by all of the world's major international accreditation bodies