Natural certified yellow sapphire is a genuine and authentic yellow sapphire that has been certified by a reputable gemstone laboratory. A gemstone laboratory is an independent and unbiased organization that evaluates and tests gemstones to determine their authenticity, quality, and characteristics.
When purchasing a natural certified yellow sapphire, it is important to ensure that the gemstone has been certified by a reputable and recognized laboratory, such as the Gemological Institute of America (GIA), the American Gemological Laboratories (AGL), or the International Gemological Institute (IGI). The certification will include important information about the gemstone, such as its carat weight, dimensions, color, clarity, and any treatments that it may have undergone.
It is also important to purchase yellow sapphire from a trusted and reputable source to ensure that the gemstone is genuine and of high quality. A reputable dealer will provide a certificate of authenticity and will be willing to answer any questions that you may have about the gemstone.