Manchester firm seeks to ramp up production of lab-grown diamonds Group of ex-GT Solar execs for, Diamond Works International May 13, 2021 This emerald cut, lab-grown diamond was produced using the Diamond Works Technology OneStep continuous growth process technology. A group of former GT Solar executives has launched Diamond Works Technology Inc., a Manchester firm that aims to scale up production of lab-grown diamonds using an advanced diamond-growth process that it has acquired. The OneStep CYD technology has been acquired from Diamond Works’ technology partner, Sonani Jewels Pvt. Ltd., a company based in India. At the former GT Solar, the predecessor company of GT Advanced Technologies in Hudson, the executives say they worked on commercializing crystal growth technologies, scaling factories to volume production and building global supply chains for the advanced materials.