Shop Ayaani's ethically crafted lab grown diamond jewellery collection online to elevate your style persona responsibly with stunning masterpieces. Lab Grown Diamonds is One Process Of Making Diamond In Lab. This means that a material is deposited from a gas onto a substrate and that chemical reactions are involved. HPHT stands for high pressure and high temperature. HPHT is a technique developed in the 1950s to create beautiful and lucrative diamonds. From Avira Diamonds to Akoirah, check out 6 Indian brands redefining sustainable luxury and leading the lab-grown diamond revolution. Discover the top lab-grown diamond brands in India offering ethical, stunning, and affordable diamonds. Find the best picks for sustainable jewellery today!