- This stunning 1 CT natural D color round cut lab grown diamond is certified and boasts a VVS1 clarity grade, making it an excellent choice for jewelry and watch accessories. The diamond is not enhanced and has a very light colored diamond intensity, giving it a unique and rare appeal. With a transparency of translucent and a round shape, this diamond is a one-of-a-kind piece that is perfect for collectors and enthusiasts alike. The item length measures 6.5 MM and the stone type is a diamond, created in a lab and originating from South Africa. It is perfect for wholesale and comes with a certification, ensuring its authenticity.