A lab-grown diamond is a real diamond created in a controlled laboratory environment using advanced technological processes that replicate the natural conditions under which diamonds form in the earth. These diamonds have the same physical, chemical, and optical properties as mined diamonds, but they are typically more affordable and environmentally friendly. Our .50 carat (5mm) & 1 carat (6.5mm) diamonds are certified just like natural diamonds, using the same standards and grading criteria. Our Lab-Grown Diamonds are certified by the International Gemological Institute (IGI). The 14K solid yellow or white gold chains are 16" x18", adjustable, includes a lobster claw clasp, is safe for your skin and retains its value. Purchase Includes: - Each diamond is laser inscribed with a unique serial number an comes with the corresponding IGI certificate. - Each necklace come perfectly presented in a luxurious LED light-up jewelry box, making every opening feel extra special.