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Creating our jewels exclusively with lab-grown diamonds is a conscious choice. We can recreate Earth’s process of over a billion years in 600 hours through breakthrough science and technology to create a more sustainable diamond. All Unsaid diamonds are grown at our lab, ALTR Tech in Surat, India, which is powered by renewable energy. For every carat, a mined diamond requires 7300 litres of water and emits 160kg CO2. Whereas every carat of lab-grown diamonds requires just 1 litre of water and 12kg of CO2. (Trucost Report 2017)
A lab-grown diamond's crystal structure and chemical composition are identical to one extracted from the earth. The difference is that a lab-grown diamond is entirely pure. Classified as Type IIa, the most prized and collectable type of diamond, they have no chemical impurities on the lattice, which means that the entire diamond crystal is made of carbon. As a result, only 5% of mined diamonds can compare.
Unsaid diamonds are created by placing a diamond seed inside a sealed chamber heated to approximately 800° Celsius. Next, in a chemical vapour deposition (CVD) process, the chamber is filled with methane gas created from animal waste, hydrogen gas extracted from rainwater, and carbon gas, which ionises into plasma and breaks the molecular bonds of the gasses. Then, using the sun’s energy, the process of growing the diamond continues as the pure carbon adheres to the seed and crystallises, forming a diamond with the same scintillation, flash, fire and brilliance as a mined stone.
Growing diamonds in a lab allows remarkable flexibility as size, cut, and colour can all be predetermined. We can now design our pieces first and then grow the diamonds to exact specifications, making genuinely remarkable and original jewellery pieces.