Buying lapis lazuli with a certificate is a great way to ensure that you are getting a high-quality product. Lapis lazuli is a semi-precious stone with a long history of use in jewelry and other decorative objects. It is important to note that not all lapis lazuli on the market is of the same quality. A certificate will provide assurance that the lapis lazuli you are purchasing is genuine and of high quality. The certificate should include information about the origin of the stone, its size, color and clarity, and any treatments it may have undergone. Knowing this information will help you make a confident and informed purchase. Additionally, if you are buying lapis lazuli for investment purposes, having a certificate will help you get the most out of your money.